CN107389160B - Detection device and detection method for detecting gas meter card - Google Patents
Detection device and detection method for detecting gas meter card Download PDFInfo
- Publication number
- CN107389160B CN107389160B CN201710756887.0A CN201710756887A CN107389160B CN 107389160 B CN107389160 B CN 107389160B CN 201710756887 A CN201710756887 A CN 201710756887A CN 107389160 B CN107389160 B CN 107389160B
- Authority
- CN
- China
- Prior art keywords
- flow
- gas meter
- meter
- gas
- information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 149
- 238000004891 communication Methods 0.000 claims abstract description 33
- 238000012544 monitoring process Methods 0.000 claims abstract description 18
- 230000009471 action Effects 0.000 claims abstract description 17
- 238000013500 data storage Methods 0.000 claims abstract description 11
- 230000003750 conditioning effect Effects 0.000 claims description 40
- 238000005070 sampling Methods 0.000 claims description 22
- 238000012545 processing Methods 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 238000007781 pre-processing Methods 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 112
- 238000010586 diagram Methods 0.000 description 7
- 238000007789 sealing Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
- G01F25/15—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters specially adapted for gas meters
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F15/00—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity
- G07F15/10—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity with alarm or warning devices, e.g. indicating the interrupting of the supply
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention relates to a detection device and a detection method for detecting a gas meter card meter. The intelligent gas meter is characterized by comprising a gas meter, an IC card controller, a flow detection module and a valve which are connected in a matched manner, wherein the IC card controller comprises an MCU, a metering communication interface, a flow detection interface, a power supply control, a valve control, a data storage, a display alarm and a wireless communication module. The invention uses the principle that the normal flow measurement and the misoperation of the gas meter are not influenced, adopts the mode of combining the flow detection module and the gas meter to finish the monitoring and the measurement of the gas consumption of the user, and judges the gas meter and executes the related actions when the flow detection module detects that the flow exists and the gas meter does not run.
Description
Technical Field
The invention relates to a detection device and a detection method for detecting a gas meter card meter.
Background
Natural gas, coal gas and liquefied gas are widely applied to various fields of society, and are taken as diaphragm gas meters specially used for measuring the volume flow of the gas, and the diaphragm gas meters have the advantages of maximum current yield, the widest application and the most representative gas metering instruments due to the advantages of high metering accuracy, high cost performance, mature technology, reliable metering, stable quality and the like. The blocking of the membrane type gas meter is a common meter fault, and is generally called as a 'blocking meter'. The cause of the fault of the card meter mainly comprises the following aspects:
1. the sliding valve cover is tilted due to collision and the like during transportation, carrying and installation;
2. the crank connecting rod mechanism is provided with a drop or a shift at a fixed position;
3. the screw loosens and the foreign object is blocked to the transmission mechanism;
4. the wear of the counting transmission part occurs during use.
When the meter clamping fault occurs, the mechanical digital wheel clamping can not be found in time, and the source cannot be traced, so that great gas loss and trade disputes can be brought to a gas company.
For a gas meter user, the fault can be found only when the user checks the meter at home; for intelligent gas meters, whether a "stuck meter" occurs is generally judged by monitoring the number of days the meter has no measurement. The controller is preset with a 'days of clamping' and sends a valve closing signal when the time exceeds the set 'days of clamping', and the valve in the meter is cut off to stop supplying air. The user can only allow after-sales personnel of the gas company to go on the gate to overhaul and can continue to use the gas through the report. Many gas users may not be at home for a long time, so in order to avoid affecting the normal gas consumption of the users and reducing the maintenance workload of after-sales personnel, the "days of the card list" is generally set to be larger, which brings a certain gas loss to the gas company.
The phenomenon of film type gas meter sticking is a common technical difficulty in the industry, and is characterized in that: it is unpredictable, can not be monitored, can not chase the root of the plastic source, etc.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a detection device and a detection method for detecting the card meter of a gas meter.
The detection device for detecting the gas meter card meter is characterized by comprising a gas meter, an IC card controller, a flow detection module and a valve which are cooperatively connected, wherein the IC card controller comprises an MCU, a metering communication interface, a flow detection interface, a power supply control module, a valve control module, a data storage module, a display alarm module and a wireless communication module, the gas meter responsible for gas metering by a user is connected with the metering communication interface in a pulse or digital communication mode, real-time volume flow information is transmitted to the MCU, and the MCU performs charging, display, data storage or communication; the flow detection module is respectively connected with the power control and the flow detection interface in a communication mode and is responsible for flow monitoring, when the MCU needs to acquire flow monitoring information, the flow detection module is powered on through the power control, at this time, the flow detection module operates normally and transmits the flow state information at this time to the MCU through the flow detection interface, the IC card controller judges whether a meter clamping phenomenon occurs after acquiring the flow monitoring information, if so, the current state information is firstly stored, a prompt alarm is given out through a display or a built-in buzzer, a user is notified of timely maintenance, meanwhile, the information is timely transmitted to a dispatching center of a gas company through the built-in wireless communication module, if no fault is timely removed in the appointed time, the valve control acquires a valve closing instruction of the MCU, valve closing action is executed on the valve, and action information is recorded; the data storage is responsible for normal metering and simultaneously records each state information of the system information and can be obtained through an external data line.
The detection device for detecting the gas meter card meter is characterized in that the flow detection module is arranged at the inlet end of the valve through the outside of the pipe body, the pipe body is connected with the valve through a flange, the pipe body is provided with a connecting base, and the flow detection module is arranged on the pipe body through the connecting base; the flow detection module comprises a flow detection sensor, a signal conditioning circuit board, a metal cover shell and a data wire, wherein the flow detection sensor is connected with the signal conditioning circuit board, the signal conditioning circuit board is connected with the IC card controller through the data wire, the flow detection sensor penetrates through the connecting base and stretches into the pipe body, and the signal conditioning circuit board is fixedly arranged on the connecting base through the metal cover shell matched with the signal conditioning circuit board.
A detect detection device of gas table card table, its characterized in that flow detection module is built-in the valve, flow detection module includes flow detection sensor, signal conditioning circuit board, connecting rod and data line, flow detection sensor sets up on signal conditioning circuit board, signal conditioning circuit board links to each other with the connecting rod, the connecting rod passes through the sealing member cooperation and inserts in the valve, and the connecting rod is located the central point of valve entry or export, the data line that the connecting rod was drawn forth links to each other with the IC-card controller.
The detection device for detecting the gas meter card meter is characterized in that the flow detection module and the valve are arranged in the gas meter, and the flow detection module is connected with an IC card controller on the gas meter through a data line.
The detection device for detecting the gas meter card meter is characterized in that the flow detection sensor is an MEMS thermal flow sensor or an ultrasonic flow sensor.
The detection device for detecting the gas meter card meter is characterized in that the MEMS thermal type flow sensor comprises a heat source, two symmetrical detection resistors are arranged on two sides of the heat source, two environment temperature resistors are respectively arranged on the downstream of the heat source, one environment temperature resistor forms feedback with the heat source through a signal conditioning circuit, the heat source is always higher than the external environment by a fixed temperature value, the temperature of a medium measured by the other environment temperature resistor is used for temperature compensation of the MEMS thermal type flow sensor, and the MEMS thermal type flow sensor is connected with a signal conditioning circuit board of a flow detection module through a lead.
The detection device for detecting the gas meter card meter is characterized in that the conditioning circuit on the signal conditioning circuit board comprises:
reference power supply module: the system is responsible for supplying power to the whole signal conditioning circuit and the MEMS thermal flow sensor;
the flow signal processing module: preprocessing the corresponding relation between differential voltage signals of a pair of detection resistors of the MEMS thermal type flow sensor and the medium flow of a pipeline through a signal filtering and amplifying circuit, then delivering 24-bit AD (analog-digital) sampling, converting a voltage analog signal into a digital signal, and delivering the digital signal to an MCU (micro control unit) for processing;
a flow sensor fault detection module: detecting the state voltage of each point of the MEMS thermal flow sensor in real time, and judging whether the MEMS thermal flow sensor works normally or not by processing the state voltage through an AD (analog-to-digital) sampling and then passing the state voltage to an MCU (micro-controller unit);
temperature signal conditioning module: the voltage signal of the temperature sensor on the MEMS thermal flow sensor is subjected to AD sampling and then is transmitted to the MCU to process temperature information;
analog power supply module and digital power supply module: the analog voltage and the digital power supply of the system are respectively supplied with power by using independent voltage stabilizing chips;
and a power supply control module: and the power supply of each part of the MEMS thermal flow sensor is controlled to be switched on and off respectively, so that the power consumption of the system is reduced, and the interference among sensor elements is avoided.
The detection method for detecting the gas meter card meter is characterized by comprising the following detection processes:
1) The IC card controller obtains the gas meter reading through counting pulse or digital communication mode, and performs the related operations of counting, charging and information storage;
1.1 After the system is powered on and the initialization of the IC card controller is completed, a preset sampling period is given to the timer 1 according to the nominal flow index of the gas meter, then the timer 1 is started, and the system enters a dormant state;
1.2 When the timer 1 overflows, the service program is interrupted in a corresponding sampling period, the system is automatically awakened, and the system enters a gas meter metering acquisition subprogram from a dormant state;
1.3 After the IC card controller executes the working flow of 1.1) -1.2) to obtain the gas meter reading information, carrying out corresponding processing on the data, after the working flow of 1.1) -1.2) is finished, storing relevant zone bit information by the system, entering a dormant state again, waiting for the next time sampling period to be interrupted, and repeating the operation flow of 1.1) -1.3);
2) When the user uses gas, the gas meter normally counts and transmits flow information to the IC card controller, and then the gas meter is judged to normally operate without the phenomenon of card meter, and the IC card controller executes normal operation; if the user uses gas, the gas meter has a card meter and can not count, then the real flow information can not be transmitted to the IC card controller, and at the moment, the IC card controller judges that 2 conditions exist: the user does not use gas or has the phenomenon of gas meter clamping, and the following circulation flow monitoring flow is executed at the moment:
2.1 The IC card controller sets a sampling time t for the timer 2 in advance, then starts the timer 2, overflows and generates an interrupt signal when the timing time is up, the system is automatically awakened, and the system enters an MEMS flow detection mode from a dormant micro-power consumption mode;
2.2 The power supply is turned on to control the power supply of the MEMS flow detection module, the MEMS flow detection module firstly completes initialization and self-detection work, if the system is normal, the flow detection work is immediately executed, and a flow signal Qv detected in real time is transmitted to the IC card controller through the digital signal interface, and then the power supply of the MEMS flow detection module is turned off to reduce the power consumption of the system;
2.3 After obtaining the flow signal of the MEMS flow detection module, the IC card controller judges that the flow signal Qv is greater than the minimum flow qmin of the gas meter, if the flow signal Qv is greater than the minimum flow qmin of the gas meter, the flow of the pipeline is judged, and then 2 times of 2.1) -2.2 are repeatedly executed), and if the flow signal Qv is still greater than the minimum flow qmin of the gas meter, the fact that the flow of the pipeline is really judged and confirmed for many times is shown;
2.4 If the IC card controller confirms that the pipeline has flow, if the reading of the gas meter is still not increased in the period, the pipeline is informed of gas flow, a user uses gas, and the gas meter does not count, the phenomenon of card meter is judged to occur, if the reading of the gas meter is increased in the period, the gas meter is informed of normal operation, and the MEMS flow detection mode is immediately exited;
3) If the phenomenon of the meter blocking is judged to occur, firstly recording and storing the current state information, reminding a user to maintain timely through a display screen and a buzzer, and simultaneously transmitting the information to a dispatching center of a gas company for processing timely through a built-in wireless communication module;
4) Starting timing after the alarm information is sent, and if the fault is processed in time within the set time, closing the alarm prompt by the IC card controller to normally operate; if the fault is not processed within the preset time, immediately executing valve closing action, recording and storing the action information, and sending the last valve closing information to a dispatching center of a gas company through a built-in wireless communication module to enter a low-power consumption mode;
5) After the IC card controller executes the valve closing action and enters the low power consumption mode, the gas company sends professionals to the site to process faults, and then the valve can be restarted to execute the normal working mode.
According to the invention, the micro-power consumption MEMS thermal flow sensor is adopted as the flow detection module, and is additionally arranged in the gas meter or becomes an independent component to be additionally arranged outside, so that intermittent monitoring is carried out on pipeline gas, when the gas meter is found to be not counted and has flow, fault alarm is prompted and a valve is closed, the phenomenon that a user does not count during normal gas consumption in the actual use process of the conventional gas meter is solved, and the metering loss caused by long-time gas consumption is avoided.
Drawings
FIG. 1 is a block diagram of the structure of the present invention;
FIG. 2 is a block diagram of a MEMS thermal flow sensor connected to an IC card controller;
FIG. 3 is a schematic diagram of the flow detection module outside the valve;
FIG. 4 is a schematic diagram of the flow detection module in FIG. 3;
FIG. 5 is a schematic diagram of a flow detection module built into a valve;
FIG. 6 is a schematic diagram of an IC card controller, a flow detection module and a valve built in a gas meter;
FIG. 7 is a schematic diagram of the flow detection module of FIG. 6;
FIG. 8 is a chart detection flow chart;
in the figure: the gas meter comprises a 1-gas meter, a 2-IC card controller, a 3-flow detection module, a 4-valve, a 5-tube body, a 6-connection base, a 7-flow detection sensor, an 8-signal conditioning circuit board, a 9-metal cover shell, a 10-data line, an 11-sealing ring, a 12-socket head cap screw, a 13-connecting rod and a 14-micro-channel structure.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
the detection device for detecting the gas meter card meter comprises a gas meter 1, an IC card controller 2, a flow detection module 3 and a valve 4 which are connected in a matched manner, wherein the IC card controller 2 comprises an MCU, a metering communication interface, a flow detection interface, a power supply control, a valve control, a data storage, a display alarm and a wireless communication module, the gas meter responsible for gas metering by a user is connected with the metering communication interface in a pulse or digital communication manner, real-time volume flow information is transmitted to the MCU, and the MCU performs charging, display, data storage or communication; the flow detection module 3 is respectively connected with a power supply control and a flow detection interface through I C, RS or RS485 communication modes by adopting leads and is responsible for flow monitoring, when the MCU needs to acquire flow monitoring information, the flow detection module is powered on through the power supply control, at this time, the flow detection module normally operates and transmits the flow state information at this time to the MCU through the flow detection interface, the IC card controller judges whether a meter clamping phenomenon occurs after acquiring the flow monitoring information, if so, the current state information is firstly stored, and the current state information is displayed or provided with a buzzer to prompt an alarm to inform a user for timely maintenance, meanwhile, the information is timely transmitted to a dispatching center of a gas company through a built-in wireless communication module, if no fault is timely removed in appointed time, the valve control acquires an MCU valve closing instruction, valve closing action is executed on the valve, and action information is recorded; the data storage is responsible for normal metering and simultaneously records each state information of the system information and can be obtained through an external data line.
The flow detection module can be externally arranged on the valve, and specifically comprises: the flow detection module 3 is externally arranged at the inlet end of the valve 4 through the pipe body 5, the structure of a gas meter or a valve body is not required to be changed, and the real-time flow state information is transmitted to the IC card controller only by adopting I C, RS or RS485 through a data line. The pipe body 5 is connected with the valve through a flange, a connecting base 6 is arranged on the pipe body, and the flow detection module is arranged on the pipe body through the connecting base; the flow detection module comprises a flow detection sensor 7, a signal conditioning circuit board 8, a metal cover shell 9 and a data wire 10, wherein the flow detection sensor 7 is connected with the signal conditioning circuit board 8, the signal conditioning circuit board 8 is connected with the IC card controller 2 through the data wire 10, the flow detection sensor penetrates through the connecting base and stretches into the pipe body, and the signal conditioning circuit board is fixedly arranged on the connecting base through the metal cover shell 9 matched with the signal conditioning circuit board. The top end of the metal cover shell is provided with a threaded hole, the threads are used for connecting a waterproof metal corrugated pipe, one end of a data wire is connected to the IC card controller through the waterproof metal corrugated pipe, the other end of the data wire is connected with a flow detection sensor (such as an MEMS flow sensor) and is responsible for processing analog signals of the flow detection sensor; the metal cover shell is sealed by adopting a precise combination mode with a sealing ring 11 embedded in the connecting base, and two hexagon socket screws 12 are symmetrically used on two sides to fix the shell and the pipe body base connecting base.
When the MEMS thermal flow sensor is adopted, the micro-channel structure and the built-in MEMS flow sensor are arranged in the center of the tube body and are parallel to the flow velocity direction. And simultaneously, the micro-flow channel structure and the pipeline rectifier structure are combined, so that the flow field distribution of a measuring area of the flow sensor is improved, and the measuring precision and consistency of products are improved.
The flow detection module is accomplished the function including:
(1) Flow detection, operation, data storage, independent calibration and verification;
(2) Temperature measurement, operation and compensation;
(3) Detecting a sensor fault;
(4) The sensor communicates with the IC card controller, and conveys information such as flow, temperature, state and the like to the IC card controller, and simultaneously receives commands of the IC card controller to execute corresponding operations.
The flow detection module can be built-in the valve, and the flow detection module includes flow detection sensor 7, signal conditioning circuit board 8, connecting rod 13 and data line 10, and flow detection sensor 7 sets up on signal conditioning circuit board 8, and signal conditioning circuit board 8 links to each other with connecting rod 13, and connecting rod 13 passes through the sealing member cooperation and inserts in valve 4, and the connecting rod is located the central point of valve entry or export, and the data line that the connecting rod was drawn forth links to each other with the IC-card controller. When the MEMS thermal type flow sensor is adopted, the micro-channel structure 14 and the connecting rod are integrated, and a 1mm thick sheet structure is respectively positioned at the top and the bottom of the plane of the MEMS thermal type flow sensor and is parallel to the surface of the MEMS thermal type flow sensor; the inside epoxy pouring sealant that adopts of connecting rod makes sensor circuit board and subassembly integration, reaches pressure-tight sealed purpose.
The flow detection module and the valve can be arranged in the gas meter, and the flow detection module is connected with an IC card controller on the gas meter through a data line.
The flow detection sensor of the invention can adopt MEMS thermal flow sensor, ultrasonic flow sensor or other sensors capable of realizing micro flow detection.
Specifically, the MEMS thermal flow sensor comprises a heat source, two symmetrical detection resistors are arranged on two sides of the heat source, two environment temperature resistors are respectively arranged at the downstream of the heat source, wherein one environment temperature resistor forms feedback with the heat source through a signal conditioning circuit, so that the heat source is always higher than the external environment by a fixed temperature value, the temperature of a medium measured by the other environment temperature resistor is used for temperature compensation of the MEMS thermal flow sensor, and the MEMS thermal flow sensor is connected with a signal conditioning circuit board of the flow detection module through a lead.
The conditioning circuit on the signal conditioning circuit board comprises:
reference power supply module: the system is responsible for supplying power to the whole signal conditioning circuit and the MEMS thermal flow sensor;
the flow signal processing module: preprocessing the corresponding relation between differential voltage signals of a pair of detection resistors of the MEMS thermal type flow sensor and the medium flow of a pipeline through a signal filtering and amplifying circuit, then delivering 24-bit AD (analog-digital) sampling, converting a voltage analog signal into a digital signal, and delivering the digital signal to an MCU (micro control unit) for processing;
a flow sensor fault detection module: detecting the state voltage of each point of the MEMS thermal flow sensor in real time, and judging whether the MEMS thermal flow sensor works normally or not by processing the state voltage through an AD (analog-to-digital) sampling and then passing the state voltage to an MCU (micro-controller unit);
temperature signal conditioning module: the voltage signal of the temperature sensor on the MEMS thermal flow sensor is subjected to AD sampling and then is transmitted to the MCU to process temperature information;
analog power supply module and digital power supply module: the analog voltage and the digital power supply of the system are respectively supplied with power by using independent voltage stabilizing chips;
and a power supply control module: and the power supply of each part of the MEMS thermal flow sensor is controlled to be switched on and off respectively, so that the power consumption of the system is reduced, and the interference among sensor elements is avoided.
The power supply of the flow detection module is mainly provided and controlled by the IC card controller, and the information of flow, state and the like is transmitted to the IC card controller through digital communication such as I, C, RS, RS485 and the like.
A detection method capable of detecting a gas meter card meter comprises the following detection processes:
1) The IC card controller obtains the gas meter reading through counting pulse or digital communication mode, and performs the related operations of counting, charging and information storage;
1.1 After the system is powered on and the initialization of the IC card controller is completed, a preset sampling period is given to the timer 1 according to the nominal flow index of the gas meter, then the timer 1 is started, and the system enters a dormant state;
1.2 When the timer 1 overflows, the service program is interrupted in a corresponding sampling period, the system is automatically awakened, and the system enters a gas meter metering acquisition subprogram from a dormant state;
1.3 After the IC card controller executes the working flow of 1.1) -1.2) to obtain the gas meter reading information, carrying out corresponding processing on the data, after the working flow of 1.1) -1.2) is finished, storing relevant zone bit information by the system, entering a dormant state again, waiting for the next time sampling period to be interrupted, and repeating the operation flow of 1.1) -1.3);
2) When the user uses gas, the gas meter normally counts and transmits flow information to the IC card controller, and then the gas meter is judged to normally operate without the phenomenon of card meter, and the IC card controller executes normal operation; if the user uses gas, the gas meter has a card meter and can not count, then the real flow information can not be transmitted to the IC card controller, and at the moment, the IC card controller judges that 2 conditions exist: the user does not use gas or has the phenomenon of gas meter clamping, and the following circulation flow monitoring flow is executed at the moment:
2.1 The IC card controller sets a sampling time t for the timer 2 in advance, then starts the timer 2, overflows and generates an interrupt signal when the timing time is up, the system is automatically awakened, and the system enters an MEMS flow detection mode from a dormant micro-power consumption mode;
2.2 The power supply is turned on to control the power supply of the MEMS flow detection module, the MEMS flow detection module firstly completes initialization and self-detection work, if the system is normal, the flow detection work is immediately executed, and a flow signal Qv detected in real time is transmitted to the IC card controller through the digital signal interface, and then the power supply of the MEMS flow detection module is turned off to reduce the power consumption of the system;
2.3 After obtaining the flow signal of the MEMS flow detection module, the IC card controller judges that the flow signal Qv is greater than the minimum flow qmin of the gas meter, if the flow signal Qv is greater than the minimum flow qmin of the gas meter, the flow of the pipeline is judged, and then 2 times of 2.1) -2.2 are repeatedly executed), and if the flow signal Qv is still greater than the minimum flow qmin of the gas meter, the fact that the flow of the pipeline is really judged and confirmed for many times is shown;
2.4 If the IC card controller confirms that the pipeline has flow, if the reading of the gas meter is still not increased in the period, the pipeline is informed of gas flow, a user uses gas, and the gas meter does not count, the phenomenon of card meter is judged to occur, if the reading of the gas meter is increased in the period, the gas meter is informed of normal operation, and the MEMS flow detection mode is immediately exited;
3) If the phenomenon of the meter blocking is judged to occur, firstly recording and storing the current state information, reminding a user to maintain timely through a display screen and a buzzer, and simultaneously transmitting the information to a dispatching center of a gas company for processing timely through a built-in wireless communication module;
4) Starting timing after the alarm information is sent, and if the fault is processed in time within the set time, closing the alarm prompt by the IC card controller to normally operate; if the fault is not processed within the preset time, immediately executing valve closing action, recording and storing the action information, and sending the last valve closing information to a dispatching center of a gas company through a built-in wireless communication module to enter a low-power consumption mode;
5) After the IC card controller executes the valve closing action and enters the low power consumption mode, the gas company sends professionals to the site to process faults, and then the valve can be restarted to execute the normal working mode.
The invention uses the principle that the normal flow measurement and the misoperation of the gas meter are not influenced, adopts the mode of combining the flow detection module and the gas meter to finish the monitoring and the measurement of the gas consumption of the user, and judges the gas meter and executes the related actions when the flow detection module detects that the flow exists and the gas meter does not run.
In order to reduce the power consumption of the whole system, the flow detection module self adopts an intermittent working mode to reduce the power consumption of the flow detection module, and meanwhile, the power supply system is controlled by a gas meter main system or an IC card controller, so that the pipeline flow can be monitored by changing the period at will according to actual needs.
In order to prevent misoperation, the flow detection module has a self-checking function, false alarm caused by self-failure is prevented, and meanwhile, the accuracy is further improved by adopting a method of sampling and comparing for multiple times.
The flow detection module can be built in a gas meter or a valve in an integrated design, and can also be manufactured into an independent component in a separation mode to be connected with a flow meter pipeline.
The invention mainly introduces the technical scheme of using MEMS thermal flow sensor to realize flow monitoring, and the invention can also adopt other modes of flow monitoring to realize the following: ultrasonic flow sensors, and the like.
The invention discloses a diaphragm gas meter application technical scheme, and can be applied to a gas flowmeter and other full-electronic flow meters.
The MEMS thermal flow sensor is used as a detection means for detecting the gas flow in the gas meter, and has the characteristics of small volume, high response speed, high sensitivity, low power consumption, near zero start, no mechanical abrasion, good stability, high cost performance and the like. The micro-power consumption application characteristic of the intelligent gas meter can be met, and the meter can be conveniently additionally installed, improved and upgraded.
Because the detection sensitivity is high and the flow is close to zero, the detection can be timely carried out on mechanical jamming with different degrees.
By adopting the scheme, the metering loss caused by the fact that the gas is used for a long time and cannot be perceived due to the mechanical meter clamping can be effectively solved, and the problem of the clamping is avoided, so that trade disputes which are caused by long-term trouble of users and gas operation companies are avoided.
Claims (6)
1. The detection device for detecting the gas meter card meter is characterized by comprising a gas meter, an IC card controller, a flow detection module and a valve which are cooperatively connected, wherein the IC card controller comprises an MCU, a metering communication interface, a flow detection interface, a power supply control, a valve control, a data storage, a display alarm and a wireless communication module, and is responsible for connecting the gas meter metered by a user with the metering communication interface in a pulse or digital communication mode, transmitting real-time volume flow information to the MCU, and executing charging, display, data storage or communication by the MCU; the flow detection module is respectively connected with the power control and the flow detection interface in a communication mode and is responsible for flow monitoring, when the MCU needs to acquire flow monitoring information, the flow detection module is powered on through the power control, at this time, the flow detection module operates normally and transmits the flow state information at this time to the MCU through the flow detection interface, the IC card controller judges whether a meter clamping phenomenon occurs after acquiring the flow monitoring information, if so, the current state information is firstly stored, a prompt alarm is given out through a display or a built-in buzzer, a user is notified of timely maintenance, meanwhile, the information is timely transmitted to a dispatching center of a gas company through the built-in wireless communication module, if no fault is timely removed in the appointed time, the valve control acquires a valve closing instruction of the MCU, valve closing action is executed on the valve, and action information is recorded; the data storage is responsible for normal metering and simultaneously records each state information of the system information and can be obtained through an external data line;
the flow detection module is arranged at the inlet end of the valve through the outside of the pipe body, the pipe body is connected with the valve through a flange, a connecting base is arranged on the pipe body, and the flow detection module is arranged on the pipe body through the connecting base; the flow detection module comprises a flow detection sensor, a signal conditioning circuit board, a metal cover shell and a data wire, wherein the flow detection sensor is connected with the signal conditioning circuit board, the signal conditioning circuit board is connected with the IC card controller through the data wire, the flow detection sensor penetrates through the connecting base and stretches into the pipe body, and the signal conditioning circuit board is fixedly arranged on the connecting base through the metal cover shell matched with the signal conditioning circuit board.
2. The detection device for detecting the card meter of the gas meter according to claim 1, wherein the flow detection module and the valve are arranged in the gas meter, and the flow detection module is connected with an IC card controller on the gas meter through a data line.
3. The detection device for detecting the card meter of the gas meter according to claim 1 or 2, wherein the flow detection sensor is a MEMS thermal flow sensor or an ultrasonic flow sensor.
4. The detection device for detecting the gas meter card meter according to claim 3, wherein the MEMS thermal flow sensor comprises a heat source, two symmetrical detection resistors are arranged on two sides of the heat source, two environment temperature resistors are respectively arranged on the downstream side of the heat source, one environment temperature resistor forms feedback with the heat source through a signal conditioning circuit, so that the heat source is always higher than the external environment by a fixed temperature value, the temperature of a medium is measured by the other environment temperature resistor for temperature compensation of the MEMS thermal flow sensor, and the MEMS thermal flow sensor is connected with a signal conditioning circuit board of the flow detection module through a lead.
5. The detecting device for detecting a card meter of a gas meter according to claim 4, wherein the conditioning circuit on the signal conditioning circuit board comprises:
reference power supply module: the system is responsible for supplying power to the whole signal conditioning circuit and the MEMS thermal flow sensor;
the flow signal processing module: preprocessing the corresponding relation between differential voltage signals of a pair of detection resistors of the MEMS thermal type flow sensor and the medium flow of a pipeline through a signal filtering and amplifying circuit, then delivering 24-bit AD (analog-digital) sampling, converting a voltage analog signal into a digital signal, and delivering the digital signal to an MCU (micro control unit) for processing;
a flow sensor fault detection module: detecting the state voltage of each point of the MEMS thermal flow sensor in real time, and judging whether the MEMS thermal flow sensor works normally or not by processing the state voltage through an AD (analog-to-digital) sampling and then passing the state voltage to an MCU (micro-controller unit);
temperature signal conditioning module: the voltage signal of the temperature sensor on the MEMS thermal flow sensor is subjected to AD sampling and then is transmitted to the MCU to process temperature information;
analog power supply module and digital power supply module: the analog voltage and the digital power supply of the system are respectively supplied with power by using independent voltage stabilizing chips;
and a power supply control module: and the power supply of each part of the MEMS thermal flow sensor is controlled to be switched on and off respectively, so that the power consumption of the system is reduced, and the interference among sensor elements is avoided.
6. A detection method for detecting a gas meter card meter is characterized in that the detection flow is as follows:
1) The IC card controller obtains the gas meter reading through counting pulse or digital communication mode, and performs the related operations of counting, charging and information storage;
1.1 After the system is powered on and the initialization of the IC card controller is completed, a preset sampling period is given to the timer 1 according to the nominal flow index of the gas meter, then the timer 1 is started, and the system enters a dormant state;
1.2 When the timer 1 overflows, the service program is interrupted in a corresponding sampling period, the system is automatically awakened, and the system enters a gas meter metering acquisition subprogram from a dormant state;
1.3 After the IC card controller executes the working flow of 1.1) -1.2) to obtain the gas meter reading information, carrying out corresponding processing on the data, after the working flow of 1.1) -1.2) is finished, storing relevant zone bit information by the system, entering a dormant state again, waiting for the next time sampling period to be interrupted, and repeating the operation flow of 1.1) -1.3);
2) When the user uses gas, the gas meter normally counts and transmits flow information to the IC card controller, and then the gas meter is judged to normally operate without the phenomenon of card meter, and the IC card controller executes normal operation; if the user uses gas, the gas meter has a card meter and can not count, then the real flow information can not be transmitted to the IC card controller, and at the moment, the IC card controller judges that 2 conditions exist: the user does not use gas or has the phenomenon of gas meter clamping, and the following circulation flow monitoring flow is executed at the moment:
2.1 The IC card controller sets a sampling time t for the timer 2 in advance, then starts the timer 2, overflows and generates an interrupt signal when the timing time is up, the system is automatically awakened, and the system enters an MEMS flow detection mode from a dormant micro-power consumption mode;
2.2 The power supply is turned on to control the power supply of the MEMS flow detection module, the MEMS flow detection module firstly completes initialization and self-detection work, if the system is normal, the flow detection work is immediately executed, and a flow signal Qv detected in real time is transmitted to the IC card controller through the digital signal interface, and then the power supply of the MEMS flow detection module is turned off to reduce the power consumption of the system;
2.3 After obtaining the flow signal of the MEMS flow detection module, the IC card controller judges that the flow signal Qv is greater than the minimum flow qmin of the gas meter, if the flow signal Qv is greater than the minimum flow qmin of the gas meter, the flow of the pipeline is judged, and then 2 times of 2.1) -2.2 are repeatedly executed), and if the flow signal Qv is still greater than the minimum flow qmin of the gas meter, the fact that the flow of the pipeline is really judged and confirmed for many times is shown;
2.4 If the IC card controller confirms that the pipeline has flow, if the reading of the gas meter is still not increased in the period, the pipeline is informed of gas flow, a user uses gas, and the gas meter does not count, the phenomenon of card meter is judged to occur, if the reading of the gas meter is increased in the period, the gas meter is informed of normal operation, and the MEMS flow detection mode is immediately exited;
3) If the phenomenon of the meter blocking is judged to occur, firstly recording and storing the current state information, reminding a user to maintain timely through a display screen and a buzzer, and simultaneously transmitting the information to a dispatching center of a gas company for processing timely through a built-in wireless communication module;
4) Starting timing after the alarm information is sent, and if the fault is processed in time within the set time, closing the alarm prompt by the IC card controller to normally operate; if the fault is not processed within the preset time, immediately executing valve closing action, recording and storing the action information, and sending the last valve closing information to a dispatching center of a gas company through a built-in wireless communication module to enter a low-power consumption mode;
5) After the IC card controller executes the valve closing action and enters the low power consumption mode, the gas company sends professionals to the site to process faults, and then the valve can be restarted to execute the normal working mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710756887.0A CN107389160B (en) | 2017-08-29 | 2017-08-29 | Detection device and detection method for detecting gas meter card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710756887.0A CN107389160B (en) | 2017-08-29 | 2017-08-29 | Detection device and detection method for detecting gas meter card |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107389160A CN107389160A (en) | 2017-11-24 |
| CN107389160B true CN107389160B (en) | 2023-07-04 |
Family
ID=60346527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710756887.0A Active CN107389160B (en) | 2017-08-29 | 2017-08-29 | Detection device and detection method for detecting gas meter card |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107389160B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107783531A (en) * | 2017-11-29 | 2018-03-09 | 廊坊新奥燃气设备有限公司 | It is a kind of to apply the tool in gas meter controller automatic checkout system, automatic checkout system and detection method |
| CN109975685A (en) * | 2017-12-27 | 2019-07-05 | 新智数字科技有限公司 | The detection method and detection system of GPRS domestic gas meter circuit board |
| CN108225498B (en) * | 2018-01-26 | 2023-12-26 | 杭州先锋电子技术股份有限公司 | Control system of complete machine function detection equipment of civil intelligent gas meter |
| CN109115314A (en) * | 2018-11-05 | 2019-01-01 | 廊坊新奥燃气设备有限公司 | Gas meter, flow meter ventilation operating system and test method |
| CN110864748A (en) * | 2019-12-17 | 2020-03-06 | 成都前锋电子仪器有限责任公司 | Gas pipeline flow monitoring device |
| CN111179509B (en) * | 2020-01-03 | 2022-03-25 | 广州燃气集团有限公司 | Energy-saving gas meter and implementation method and system thereof |
| CN114689150A (en) * | 2020-12-30 | 2022-07-01 | 浙江金卡智慧水务有限公司 | A water meter reverse flow identification method, device and water meter |
| CN115290165A (en) * | 2022-08-03 | 2022-11-04 | 宁波水表(集团)股份有限公司 | Ultrasonic water meter detection method, system and device |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093464A (en) * | 1992-10-05 | 1994-10-12 | 松下电器产业株式会社 | Device and method for detecting abnormality of gas supply equipment |
| JPH08278170A (en) * | 1995-04-07 | 1996-10-22 | Tokyo Gas Co Ltd | Gas meter |
| KR19990013114A (en) * | 1997-07-31 | 1999-02-25 | 유상열 | Electronic liquid meter and liquid passage detection method |
| CN2419578Y (en) * | 2000-05-22 | 2001-02-14 | 云南文通电子研究所 | IC card water meter |
| JP2001280693A (en) * | 2000-03-30 | 2001-10-10 | Mitsubishi Electric Corp | Water heater |
| JP2004205420A (en) * | 2002-12-26 | 2004-07-22 | Tokyo Gas Co Ltd | Gas meter |
| JP2007024511A (en) * | 2005-07-12 | 2007-02-01 | National Institute Of Advanced Industrial & Technology | Method and apparatus for measuring precise flow rate and calorific value of mixed gas |
| JP2008134780A (en) * | 2006-11-28 | 2008-06-12 | Matsushita Electric Ind Co Ltd | Gas appliance monitoring device |
| CN101308056A (en) * | 2007-05-20 | 2008-11-19 | 张旗 | Pipeline Leakage Monitoring Device and Technology |
| JP2009216408A (en) * | 2008-03-07 | 2009-09-24 | Panasonic Corp | Gas meter and gas metering system |
| CN101750118A (en) * | 2008-12-04 | 2010-06-23 | 泉州日新流量仪器仪表有限公司 | Complex type vane wheel impeller flowmeter |
| CN202012377U (en) * | 2011-04-06 | 2011-10-19 | 宁波宝虹信息技术有限公司 | Fault monitoring device for lubricating pipeline |
| CN203148480U (en) * | 2013-03-18 | 2013-08-21 | 武汉四方光电科技有限公司 | Ultrasound gas meter |
| CN206097305U (en) * | 2016-10-10 | 2017-04-12 | 西安普瑞米特科技有限公司 | IC -card industry intelligent monitoring gas table controller |
| CN106843019A (en) * | 2015-12-03 | 2017-06-13 | 成都九十度工业产品设计有限公司 | A kind of IC-card gas meter, flow meter |
| CN206363128U (en) * | 2017-01-11 | 2017-07-28 | 安徽汉威电子有限公司 | An Intelligent Prepaid Water Meter System |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB782170A (en) * | 1954-06-30 | 1957-09-04 | Parkinson & Cowan Ltd | Improvements in or relating to coin mechanisms for gas or electricity meters |
| JPH08167076A (en) * | 1994-12-12 | 1996-06-25 | Denjinia:Kk | Prepaid card type gas supply device |
| JPH08240473A (en) * | 1995-03-06 | 1996-09-17 | Seibu Gas Kk | Gas meter inspection device |
| CN2314408Y (en) * | 1997-11-21 | 1999-04-14 | 周亚非 | Intelligent integrated gas meter |
| CN201107071Y (en) * | 2007-11-20 | 2008-08-27 | 济南市长清计算机应用公司 | Intelligent gas meter |
| JP5206361B2 (en) * | 2008-11-26 | 2013-06-12 | 株式会社Ｉｈｉ | Fuel gas supply device for gas engine and method for preventing tar precipitation |
| CN202171841U (en) * | 2011-06-13 | 2012-03-21 | 欧福数控技术(大连)有限公司 | Anti-theft smart gas meter |
| CN202852428U (en) * | 2012-08-21 | 2013-04-03 | 天津市蓟县通一和管道设备制造有限公司 | Indoor gas safety and anti-theft system |
| CN203688023U (en) * | 2014-01-10 | 2014-07-02 | 宁波忻杰燃气用具实业有限公司 | Gas meter way locking device |
| CN103839391A (en) * | 2014-01-20 | 2014-06-04 | 清华大学 | Intelligent fuel gas safety metering system and control method thereof |
| CN104700504B (en) * | 2015-03-31 | 2017-10-31 | 成都秦川物联网科技股份有限公司 | Safety cut-off type IC-card intelligent quality flow gas table and its management system |
| CN205642502U (en) * | 2016-05-30 | 2016-10-12 | 四川鹏翔电子科技有限责任公司 | Easily gas meter core of processing personally experiences sth. part of body |
| CN106910290B (en) * | 2017-01-13 | 2019-06-28 | 成都中科慧源科技有限公司 | A kind of metering abnormality alarming system of intelligent gas meter |
| CN107036671A (en) * | 2017-06-03 | 2017-08-11 | 连云港脱普仪表有限公司 | A kind of intellectual water meter compensates sensor automatically |
-
2017
- 2017-08-29 CN CN201710756887.0A patent/CN107389160B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093464A (en) * | 1992-10-05 | 1994-10-12 | 松下电器产业株式会社 | Device and method for detecting abnormality of gas supply equipment |
| JPH08278170A (en) * | 1995-04-07 | 1996-10-22 | Tokyo Gas Co Ltd | Gas meter |
| KR19990013114A (en) * | 1997-07-31 | 1999-02-25 | 유상열 | Electronic liquid meter and liquid passage detection method |
| JP2001280693A (en) * | 2000-03-30 | 2001-10-10 | Mitsubishi Electric Corp | Water heater |
| CN2419578Y (en) * | 2000-05-22 | 2001-02-14 | 云南文通电子研究所 | IC card water meter |
| JP2004205420A (en) * | 2002-12-26 | 2004-07-22 | Tokyo Gas Co Ltd | Gas meter |
| JP2007024511A (en) * | 2005-07-12 | 2007-02-01 | National Institute Of Advanced Industrial & Technology | Method and apparatus for measuring precise flow rate and calorific value of mixed gas |
| JP2008134780A (en) * | 2006-11-28 | 2008-06-12 | Matsushita Electric Ind Co Ltd | Gas appliance monitoring device |
| CN101308056A (en) * | 2007-05-20 | 2008-11-19 | 张旗 | Pipeline Leakage Monitoring Device and Technology |
| JP2009216408A (en) * | 2008-03-07 | 2009-09-24 | Panasonic Corp | Gas meter and gas metering system |
| CN101750118A (en) * | 2008-12-04 | 2010-06-23 | 泉州日新流量仪器仪表有限公司 | Complex type vane wheel impeller flowmeter |
| CN202012377U (en) * | 2011-04-06 | 2011-10-19 | 宁波宝虹信息技术有限公司 | Fault monitoring device for lubricating pipeline |
| CN203148480U (en) * | 2013-03-18 | 2013-08-21 | 武汉四方光电科技有限公司 | Ultrasound gas meter |
| CN106843019A (en) * | 2015-12-03 | 2017-06-13 | 成都九十度工业产品设计有限公司 | A kind of IC-card gas meter, flow meter |
| CN206097305U (en) * | 2016-10-10 | 2017-04-12 | 西安普瑞米特科技有限公司 | IC -card industry intelligent monitoring gas table controller |
| CN206363128U (en) * | 2017-01-11 | 2017-07-28 | 安徽汉威电子有限公司 | An Intelligent Prepaid Water Meter System |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107389160A (en) | 2017-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107389160B (en) | Detection device and detection method for detecting gas meter card | |
| CN102506964B (en) | Liquid reservoir automatic calibration device and calibration method | |
| CN102913758B (en) | Fluid loss monitoring device and method | |
| CN202002689U (en) | Flow rate detection instrument capable of controlling flow rate | |
| CN102080767B (en) | Method and device for detecting oil mixing interface in sequential oil transportation | |
| CN109209304A (en) | A kind of well plunger control system | |
| CN206892366U (en) | A kind of calibrating installation of rain condition monitoring system | |
| CN207113982U (en) | A kind of detection means for detecting gas meter, flow meter card table | |
| CN205670004U (en) | A kind of water-pipe type settlement instrument | |
| CN219496362U (en) | Mobile detection equipment for SDI value | |
| CN202058048U (en) | Automatic monitoring system for multi-purpose station clean water tank liquid levels | |
| CN207541489U (en) | Industrial gas circuit composite monitoring device | |
| CN206627165U (en) | A kind of ultrasonic water meter system with water quality detection | |
| CN214372721U (en) | Intelligent remote water meter | |
| CN201507434U (en) | Laboratory water purifier water purification pump testing device | |
| CN109540379A (en) | A kind of pressure gauge with function of failure alarm | |
| CN204788587U (en) | Transient state oil consumption appearance calibration system | |
| CN209689689U (en) | A kind of ultrasonic gas flowmeter that can accurately measure gas flow, flow velocity | |
| CN203405475U (en) | A wind speed monitor for an electroplating exhaust gas pipe | |
| CN208282349U (en) | Air conditioner refrigerating liquid leakage detector | |
| US4926678A (en) | Method and apparatus for proving electronic gas meters at low flow rates | |
| CN220625459U (en) | Air flow standard for detecting air flow | |
| CN217586139U (en) | Pressure transmitter for conveying pipeline | |
| CN206832304U (en) | A kind of quality formula flow internet of things sensors | |
| CN221992903U (en) | A pressure gauge online measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |