CN113188620A - Method and system for preventing external gas stealing for ultrasonic gas meter - Google Patents
Method and system for preventing external gas stealing for ultrasonic gas meter Download PDFInfo
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- CN113188620A CN113188620A CN202110474760.6A CN202110474760A CN113188620A CN 113188620 A CN113188620 A CN 113188620A CN 202110474760 A CN202110474760 A CN 202110474760A CN 113188620 A CN113188620 A CN 113188620A
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- ultrasonic
- gas meter
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- stealing
- detection program
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
- G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
- G01F1/662—Constructional details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/007—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus comprising means to prevent fraud
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/06—Indicating or recording devices
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- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
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- Emergency Alarm Devices (AREA)
Abstract
The invention discloses a method and a system for preventing external gas stealing for an ultrasonic gas meter, wherein the method for preventing external gas stealing comprises the following steps: the system comprises an ultrasonic gas meter, a detection program is arranged in the ultrasonic gas meter, the detection frequency of the detection program is directly random, the system for preventing external gas theft comprises an ultrasonic sensor, the ultrasonic sensor is arranged on the ultrasonic gas meter, and the detection program is arranged on the ultrasonic sensor. The invention greatly improves the gas stealing prevention performance of the ultrasonic gas meter, does not need to improve the ultrasonic gas meter, and has low cost and convenient use.
Description
Technical Field
The invention relates to an ultrasonic gas meter, in particular to a method and a system for preventing external gas stealing for the ultrasonic gas meter.
Background
An ultrasonic gas meter measures the gas flow by using the propagation principle of ultrasonic waves. The ultrasonic wave is a sound wave with the frequency higher than 20000 Hz, has good directivity and strong penetrating power, is easy to obtain more concentrated sound energy, has long propagation distance in water, and can be used for distance measurement, speed measurement, cleaning, welding, stone breaking, sterilization, disinfection and the like.
The ultrasonic gas meter detects the instantaneous flow of gas in a gas channel by utilizing an ultrasonic detection technology in a fixed time period, the ultrasonic gas meter measures the flow by adopting a time difference method, the fluid passes through the gas meter, sound waves are transmitted in the fluid, the sound wave transmission speed in the downstream direction is increased, the sound wave transmission speed in the upstream direction is decreased, and the same transmission distance has different transmission time. The ultrasonic gas meter measures the flow velocity of the gas by using the difference value of the downstream propagation time and the upstream propagation time of the sound wave in the gas, and then multiplies the flow velocity by the sectional area of the inner wall of the pipeline to obtain the instantaneous flow of the ultrasonic gas meter.
The existing gas stealing prevention mode is to set a detection program in the ultrasonic gas meter and detect the flow through the detection program so as to judge whether gas stealing is caused, and the mode has the disadvantages of complicated structure, great change of the gas meter and inconvenient use.
In addition, in the prior art, a gas stealing mode is provided, in which a pulsation device is arranged near an air inlet pipe of an ultrasonic gas meter, the pulsation device can control the opening and closing of an air inlet valve on the air inlet pipe, and even if a detection program is arranged in the ultrasonic gas meter, the detection frequency of the detection program is generally fixed, for example, the detection is performed every 2 seconds, so that the detection frequency of the detection program is only needed to be mastered, and the opening and closing of the air inlet valve on the air inlet pipe are controlled through the pulsation device, so that the detection can be avoided, and external gas stealing is realized.
Disclosure of Invention
The invention aims to solve the problems and provides a method and a system for preventing external gas stealing for an ultrasonic gas meter.
In order to achieve the purpose, the technical scheme of the invention is as follows:
an external gas theft prevention method for an ultrasonic gas meter, comprising the following steps: and setting a detection program in the ultrasonic gas meter, wherein the detection frequency of the detection program is a random formula.
In a preferred embodiment of the present invention, the detection program determines whether the ultrasonic gas meter is ventilated by detecting a wavelength of an intake probe on the ultrasonic gas meter and calculating a flow rate.
In a preferred embodiment of the present invention, the detection program detects the wavelength of the air inlet probe on the ultrasonic gas meter once at different time intervals, and calculates the flow rate, so as to determine whether the ultrasonic gas meter is ventilated.
The utility model provides a prevent outside gas system of stealing for ultrasonic wave gas table, prevent that outside gas system of stealing includes ultrasonic sensor, ultrasonic sensor sets up on ultrasonic wave gas table, the last above-mentioned detection procedure that is equipped with of ultrasonic sensor.
In a preferred embodiment of the present invention, the system for preventing external gas theft includes an alarm device, the alarm device is connected to the ultrasonic sensor, and when the detection program detects that the ultrasonic gas meter is not ventilated, the alarm device gives an alarm.
In a preferred embodiment of the present invention, the system for preventing external gas theft includes an anti-interference module, the anti-interference module is connected to the alarm device, and when an external signal interference device sends an interference signal to influence the wavelength of the gas inlet probe, the anti-interference module can detect the interference signal, perform anti-interference processing, and alarm through the alarm device.
In a preferred embodiment of the present invention, the system for preventing external gas theft further comprises a communication module, the communication module is connected to the alarm device, and the alarm device can send alarm information to the user through the communication module while alarming.
The invention has the beneficial effects that:
the invention greatly improves the gas stealing prevention performance of the ultrasonic gas meter, does not need to improve the ultrasonic gas meter, and has low cost and convenient use.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an external gas theft prevention system of an ultrasonic gas meter.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below.
The invention provides a method for preventing external gas stealing for an ultrasonic gas meter, which comprises the following steps: and setting a detection program in the ultrasonic gas meter, wherein the detection frequency of the detection program is directly a random formula.
The ultrasonic gas meter is generally provided with an air inlet probe and an air outlet probe on an air inlet and an air outlet respectively, when the ultrasonic gas meter is ventilated, the air outlet probe can sense a signal sent by the air inlet probe, and the invention can judge whether the ultrasonic gas meter is ventilated by setting a detection program in the ultrasonic gas meter, wherein the detection program calculates the corresponding flow by detecting the wavelength of the air inlet probe on the ultrasonic gas meter, and if the calculated flow is too small or not, the ultrasonic gas meter can be judged to be in a non-ventilation state.
Because the ultrasonic gas meter is provided with the gas inlet probe and the gas outlet probe, the invention judges the state of the ultrasonic gas by sensing the wavelength of the gas inlet probe, and is very convenient.
In order to prevent lawless persons, the detection frequency of the detection program is found through multiple use, the detection frequency of the detection program is directly set to be a random formula, and the wavelength of the air inlet probe on the ultrasonic gas meter is detected once at different time intervals.
The method for preventing external gas stealing is adopted, whether gas stealing is performed or not is judged directly by detecting the wavelength of the gas inlet probe, the method is completely different from the existing detection mode, and the detection mode is very convenient to detect.
According to the invention, the detection frequency of the detection program is directly set to be random, so that the condition that lawless persons steal gas from the outside by finding the detection rule can be avoided, and the safety is improved.
Referring to fig. 1, based on the above method, the present invention further provides an external gas theft prevention system for an ultrasonic gas meter, which includes an ultrasonic sensor 100, where the ultrasonic sensor 100 may be disposed inside or outside the ultrasonic sensor, and is configured to sense a wavelength of an intake probe and calculate a corresponding flow rate.
The ultrasonic sensor 100 is provided with the above-described detection program, and the detection program can control the ultrasonic sensor 100 to perform wavelength detection.
The anti-theft system for the ultrasonic gas meter can also comprise an alarm device 200, the alarm device 200 is connected with the ultrasonic sensor 100, and when the first detection program or the second detection program detects that the ultrasonic gas meter is not ventilated, the alarm device 200 can give an alarm, so that a user can know the anti-theft system in time.
In addition, in order to further improve the safety and prevent lawless persons from finding out the rule that the detection program cannot be obtained, a signal interference device is arranged outside the ultrasonic gas meter, and the emission wavelength of the air inlet probe is interfered by the signal interference device.
The system for preventing external gas stealing further comprises an anti-interference module 300, wherein the anti-interference module 300 is arranged in the ultrasonic gas meter and connected with the alarm device, when the external signal interference device sends an interference signal to influence the wavelength of the gas inlet probe, the anti-interference module 300 can detect the interference signal, perform anti-interference processing and alarm 200 through the alarm device.
The system for preventing external gas theft further comprises a communication module 400, wherein the communication module 400 is connected with the alarm device 200, and the alarm device 200 can send alarm information to a user through the communication module 400 while alarming, so that the user can know the information in time.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. An external gas stealing prevention method for an ultrasonic gas meter is characterized by comprising the following steps: and setting a detection program in the ultrasonic gas meter, wherein the detection frequency of the detection program is a random formula.
2. The method of claim 1, wherein the detection program determines whether the ultrasonic gas meter is ventilated by detecting a wavelength of a gas inlet probe of the ultrasonic gas meter and calculating a flow rate.
3. The method for preventing the external gas theft of the ultrasonic gas meter according to claim 2, wherein the detection program detects the wavelength of the gas inlet probe on the ultrasonic gas meter once at different time intervals and calculates the flow rate, thereby determining whether the ultrasonic gas meter is ventilated.
4. An external gas stealing prevention system for an ultrasonic gas meter, which is characterized by comprising an ultrasonic sensor, wherein the ultrasonic sensor is arranged on the ultrasonic gas meter, and the ultrasonic sensor is provided with a detection program according to any one of claims 1 to 3.
5. The system for preventing the external gas stealing of the ultrasonic gas meter according to claim 4, wherein the system for preventing the external gas stealing comprises an alarm device, the alarm device is connected with the ultrasonic sensor, and when the detection program detects that the ultrasonic gas meter is not ventilated, the alarm device gives an alarm.
6. The system for preventing the external gas stealing for the ultrasonic gas meter according to claim 5, wherein the system for preventing the external gas stealing comprises an anti-interference module, the anti-interference module is connected with an alarm device, and when an external signal interference device sends an interference signal to influence the wavelength of the gas inlet probe, the anti-interference module can detect the interference signal, perform anti-interference processing and give an alarm through the alarm device.
7. The system for preventing the external gas theft of the ultrasonic gas meter according to claim 6, wherein the system for preventing the external gas theft further comprises a communication module, the communication module is connected with an alarm device, and the alarm device can send alarm information to a user through the communication module while alarming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110474760.6A CN113188620A (en) | 2021-04-29 | 2021-04-29 | Method and system for preventing external gas stealing for ultrasonic gas meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110474760.6A CN113188620A (en) | 2021-04-29 | 2021-04-29 | Method and system for preventing external gas stealing for ultrasonic gas meter |
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| Publication Number | Publication Date |
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| CN113188620A true CN113188620A (en) | 2021-07-30 |
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| CN202110474760.6A Pending CN113188620A (en) | 2021-04-29 | 2021-04-29 | Method and system for preventing external gas stealing for ultrasonic gas meter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113405619A (en) * | 2021-08-19 | 2021-09-17 | 成都千嘉科技有限公司 | Method and system for realizing automatic detection of meter disassembly behavior by utilizing ultrasonic gas meter |
Citations (7)
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|---|---|---|---|---|
| CN102494729A (en) * | 2011-11-25 | 2012-06-13 | 杭州先锋电子技术股份有限公司 | Intelligent gas meter metering device and signal processing system |
| CN206725028U (en) * | 2017-05-15 | 2017-12-08 | 阜阳国祯燃气有限公司 | A kind of antitheft anti-tampering gas meter |
| CN208968607U (en) * | 2018-06-21 | 2019-06-11 | 河北华通燃气设备有限公司 | It is a kind of with can anti-theft gaseous air inlet monitor system |
| CN210603441U (en) * | 2019-11-28 | 2020-05-22 | 上海埃科燃气测控设备有限公司 | Gas ultrasonic flowmeter capable of preventing gas theft |
| CN210603442U (en) * | 2019-11-28 | 2020-05-22 | 上海埃科燃气测控设备有限公司 | Ultrasonic gas meter capable of preventing gas stealing |
| CN111897771A (en) * | 2020-07-24 | 2020-11-06 | 宁夏隆基宁光仪表股份有限公司 | Gas meter message testing method and system based on intelligent analysis model |
| CN112525277A (en) * | 2020-11-24 | 2021-03-19 | 重庆市山城燃气设备有限公司 | Gas meter with gas theft prevention function, gas theft prevention method and gas management system |
-
2021
- 2021-04-29 CN CN202110474760.6A patent/CN113188620A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494729A (en) * | 2011-11-25 | 2012-06-13 | 杭州先锋电子技术股份有限公司 | Intelligent gas meter metering device and signal processing system |
| CN206725028U (en) * | 2017-05-15 | 2017-12-08 | 阜阳国祯燃气有限公司 | A kind of antitheft anti-tampering gas meter |
| CN208968607U (en) * | 2018-06-21 | 2019-06-11 | 河北华通燃气设备有限公司 | It is a kind of with can anti-theft gaseous air inlet monitor system |
| CN210603441U (en) * | 2019-11-28 | 2020-05-22 | 上海埃科燃气测控设备有限公司 | Gas ultrasonic flowmeter capable of preventing gas theft |
| CN210603442U (en) * | 2019-11-28 | 2020-05-22 | 上海埃科燃气测控设备有限公司 | Ultrasonic gas meter capable of preventing gas stealing |
| CN111897771A (en) * | 2020-07-24 | 2020-11-06 | 宁夏隆基宁光仪表股份有限公司 | Gas meter message testing method and system based on intelligent analysis model |
| CN112525277A (en) * | 2020-11-24 | 2021-03-19 | 重庆市山城燃气设备有限公司 | Gas meter with gas theft prevention function, gas theft prevention method and gas management system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113405619A (en) * | 2021-08-19 | 2021-09-17 | 成都千嘉科技有限公司 | Method and system for realizing automatic detection of meter disassembly behavior by utilizing ultrasonic gas meter |
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