CN112791339A - Intelligent fire hydrant and fire hydrant monitoring method - Google Patents
Intelligent fire hydrant and fire hydrant monitoring method Download PDFInfo
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- CN112791339A CN112791339A CN202110032469.3A CN202110032469A CN112791339A CN 112791339 A CN112791339 A CN 112791339A CN 202110032469 A CN202110032469 A CN 202110032469A CN 112791339 A CN112791339 A CN 112791339A
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- fire hydrant
- vibration
- pressure
- data
- mcu
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/50—Testing or indicating devices for determining the state of readiness of the equipment
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B9/00—Methods or installations for drawing-off water
- E03B9/02—Hydrants; Arrangements of valves therein; Keys for hydrants
Abstract
The invention discloses an intelligent fire hydrant, which comprises a fire hydrant main body and a vibration sensor, wherein the vibration sensor is arranged at the top of the fire hydrant main body and is used for acquiring vibration data of the fire hydrant; the pressure sensor is arranged in a water inlet pipe of the fire hydrant and used for acquiring pressure data in the pipeline; the MCU is electrically connected with the vibration sensor and the pressure sensor through the filtering module respectively so as to be used for receiving vibration data and pressure data and judging whether the fire hydrant main body is in a valve opening state or not according to the vibration data and the pressure data; and the wireless transmission module is connected with the MCU. The fire hydrant monitoring method can give an alarm to the platform to inform related personnel when the water pressure is insufficient and someone steals water, and the fire safety is guaranteed.
Description
Technical Field
The invention relates to the field of fire hydrants, in particular to an intelligent fire hydrant and a fire hydrant monitoring method.
Background
The fire hydrant is a key facility for urban fire fighting, and potential safety hazards can be buried in urban fire fighting due to insufficient water pressure of the fire hydrant; unauthorized use of water can result in loss of water to the water supply enterprise. Therefore, the monitoring device has important significance for monitoring the water pressure and water stealing of the fire hydrant and the fire safety and economic benefits of cities.
Patent CN208833281U "fire hydrant water outlet detection device and fire hydrant" proposes a fire hydrant water outlet detection device, which comprises a fire hydrant main body, a fire hydrant cap, a control circuit board, a floating ball inductive switch, a floating ball and a floating ball slideway; the mobilizable cup joint of floater is on the floater slide, and the slide is fixed inside the fire hydrant main part, is located floater inductive switch below. When the water level in the fire hydrant rises, the floating ball floats up and down along with the water level, the floating ball is detected by the floating ball inductive switch, and the control circuit board judges whether the water level exceeds a normal range according to the change of the floating ball inductive switch, so that the water outlet detection is realized. The patent judges whether water exists in the fire hydrant body according to the floating ball, and if the water exists, the water is used by people. The technical scheme needs to modify the fire hydrant main body, the sensor is additionally arranged in the fire hydrant, the structure is complex, the cost is too high, and the fire hydrant can not be directly used on the existing fire hydrant.
In patent CN201120505174.5 "fire hydrant valve water theft prevention monitoring device", three valve position sensors are installed at the top end of the fire hydrant cover, when the valve is opened, the rotating shaft magnet will cross the reed pipe to generate a signal, and the more the signal triggering times, the larger the valve opening. And calculating the water yield through the valve opening time and the valve opening degree. This patent need reform transform the fire hydrant cap, and the structure is also comparatively complicated, can additionally increase the cost. In addition, the scheme monitors the rotating angle of the valve rod to judge whether the valve is opened or not, and does not monitor whether water flows or not, and the valve rod is rotated under the condition that no water exists in the bolt body, so that an alarm can be triggered, and the possibility of false alarm is realized.
Patent CN 202376661U-fire hydrant impact vibration monitoring device mentions a fire hydrant impact vibration monitoring device, which monitors whether the fire hydrant is impacted or whether the copper joint is stolen. But not to determine if someone is stealing water. However, the patent only realizes the monitoring of the fire hydrant vibration, but does not analyze the vibration data, and is applied to the fire hydrant water stealing monitoring.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides an intelligent fire hydrant and a fire hydrant monitoring method, which are easy to install and can accurately judge whether the water stealing phenomenon exists.
According to an embodiment of the invention, the intelligent fire hydrant comprises: the vibration sensor is arranged at the top of the fire hydrant main body and used for collecting vibration data of the fire hydrant; the pressure sensor is arranged in a water inlet pipe of the fire hydrant and used for acquiring pressure data in a pipeline; the MCU is electrically connected with the vibration sensor and the pressure sensor through the filtering module respectively so as to be used for receiving vibration data and pressure data and judging whether the fire hydrant main body is in a valve opening state or not according to the vibration data and the pressure data; and the wireless transmission module is connected with the MCU and is used for communicating with the master station.
A fire hydrant monitoring method comprising the steps of:
s100, initializing a system, and enabling the MCU to alternately enter a pressure sensor acquisition period and a vibration sensor acquisition period;
s200, comparing the pressure data with a preset pressure threshold value by the MCU, if the pressure data is smaller than the pressure threshold value, sending a low water pressure alarm to a background main station, and if the pressure data is higher than the pressure threshold value, not acting;
and S300, comparing the vibration data with the valve opening characteristic parameters by the MCU, and if the valve opening characteristic parameters are met and the pressure data is higher than a pressure threshold value at the moment, sending a valve opening alarm to a background main station, otherwise, not performing action.
The intelligent fire hydrant and the fire hydrant monitoring method provided by the embodiment of the invention at least have the following technical effects: according to the embodiment of the invention, the vibration sensor is arranged at the top of the fire hydrant main body, so that the vibration sensor can more accurately monitor vibration data, the vibration sensor is used for judging whether a person opens the valve or not, when the person opens the valve, acceleration is generated in a specific direction, the characteristic value of the vibration sensor is analyzed in the MCU, and when the analysis result shows that the valve is opened and the water pressure is normal, the MCU generates water stealing alarm information and sends the water stealing alarm information out through the wireless transmission module. MCU still gathers fire hydrant water pressure through pressure sensor, produces when water pressure is not enough and reports to the police, notifies relevant personnel, guarantee fire control safety to only just steal the water and report to the police when water pressure is normal, the inspection of uncapping when avoiding no water causes the wrong report.
According to some embodiments of the invention, the vibration data comprises acceleration, vibration frequency and vibration amplitude.
According to some embodiments of the invention, a flow switch device is further arranged in the fire hydrant main body, and the flow switch device is connected with the MCU for realizing water quantity control.
According to some embodiments of the invention, a sensing direction of the vibration sensor is parallel to a valve opening direction of the hydrant body.
According to some embodiments of the invention, the wireless transmission module is used for transmitting the vibration signal to the MCU, and the vibration sensor and the pressure sensor are used for sensing the vibration signal.
According to some embodiments of the invention, the bottom of the hydrant body is provided with a hydrant bottom valve for connection to a water inlet pipe.
According to some embodiments of the invention, the hydrant base valve is fixed to the inlet pipe by a flange of ductile iron.
According to some embodiments of the present invention, the opening characteristic parameters in step S300 include at least 2 of acceleration, vibration frequency, and vibration amplitude.
According to some embodiments of the invention, the opening characteristic parameters in step S300 are: the acceleration direction is parallel to the valve opening direction, the vibration amplitude is between 2mm and 2.5mm, and the vibration frequency is between 9Hz and 9.375 Hz.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural diagram of an intelligent fire hydrant according to an embodiment of the present invention;
FIG. 2 is a flow chart of a hydrant monitoring method in an embodiment of the present invention;
FIG. 3a is a graph of vibration amplitude monitoring data during valve opening;
FIG. 3b is a graph of vibration frequency monitoring data during valve opening;
FIG. 4a is a graph of vibration amplitude monitoring data at rest;
fig. 4b is a graph of vibration frequency monitoring data at rest.
Reference numerals
The fire hydrant comprises a fire hydrant main body 100, a vibration sensor 200, a pressure sensor 300, an MCU400, a wireless transmission module 500, a flow switching device 600, a fire hydrant bottom valve 700 and a nodular cast iron flange 800.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1, an intelligent fire hydrant includes: the fire hydrant comprises a fire hydrant body 100, a vibration sensor 200, a pressure sensor 300, an MCU400 and a wireless transmission module 500; the bottom of the fire hydrant main body 100 is provided with a fire hydrant bottom valve 700, the fire hydrant bottom valve 700 is connected with a water inlet pipe, and the fire hydrant bottom valve 700 is fixed on the water inlet pipe through a nodular cast iron flange 800.
The vibration sensor 200 is arranged at the top of the fire hydrant main body 100, the vibration sensor 200 is arranged at the top, so that the sensor can acquire larger acceleration, the monitoring precision is improved, general equipment always generates vibration when being subjected to external acting force, and the vibration sensor can measure the amplitude, the vibration frequency and the acceleration of the equipment. The amplitude can more clearly reflect the magnitude of the vibration intensity; the frequency may reflect the number of vibrations, and the vibration acceleration may reflect the magnitude of the impact force. Different external acting forces are applied to the fire hydrant to generate different vibration characteristics, so that whether a person opens the valve or not can be judged according to the vibration characteristics. The vibration sensor 200 can monitor X, Y, Z the acceleration in three directions, for the convenience of data analysis, the direction of the vibration sensor 200 should be parallel to the force direction of the valve opening, the sensing direction of the vibration sensor 200 should be parallel to the valve opening direction of the hydrant body, and assuming that the valve opening direction is parallel to the X direction, the X direction will generate the maximum acceleration when the valve is turned by the wrench.
The pressure sensor 300 is installed in the water inlet pipe in the nodular cast iron flange 800, and the water pressure is monitored by acquiring pressure data in the pipeline.
In this embodiment, the MCU400 and the wireless transmission module 500 are integrated into a single module, the MCU400 is electrically connected to the pressure sensor and the vibration sensor 200 through data lines, respectively, and is electrically connected to the vibration sensor 200 and the pressure sensor 300, respectively, and determines whether the hydrant main body 100 is in an open valve state according to vibration data and pressure data fed back from the sensors; then, the wireless transmission module 500 communicates with the master station to send alarm information to the platform, the wireless transmission module 500 can select a 4G module, a 5G module and the like, and the platform informs a manager through WeChat, short message and the like. Wherein the vibration data includes acceleration, vibration frequency, and vibration amplitude. The hydrant body 100 is further provided therein with a flow switching device 600, and the flow switching device 600 is connected to the MCU400 to realize water volume control.
The intelligent vibration sensor comprises a MCU400, a wireless transmission module 500, a flow switch device 600, a vibration sensor 200 and a pressure sensor 300, and is characterized by further comprising a battery module, wherein the battery module is used for supplying power to the MCU400, the wireless transmission module 500, the flow switch device 600, the vibration sensor 200 and the pressure sensor 300, and other external power supplies can be adopted for supplying power to the MCU400, the wireless transmission module 500, the flow switch device 600, the vibration sensor 200 and the pressure sensor 300.
Referring to fig. 2, the present invention also includes a fire hydrant monitoring method, comprising the steps of:
s100, initializing a system, and enabling the MCU to alternately enter a pressure sensor acquisition period and a vibration sensor acquisition period;
s200, comparing the pressure data with a preset pressure threshold value by the MCU, if the pressure data is smaller than the threshold value, sending a low water pressure alarm to a background main station, and if the pressure data is higher than the threshold value, not acting;
and S300, comparing the vibration data with a valve opening characteristic value by the MCU, if the valve opening characteristic value is met and the water pressure is in a normal range at the moment, sending a valve opening alarm to a back main station, and if the valve opening characteristic value is not met, not performing action, wherein the valve opening characteristic value comprises at least 2 of acceleration, vibration frequency and vibration amplitude. The valve opening characteristic value is obtained through experimental data, the valve opening characteristic value in the embodiment selects acceleration, vibration frequency and vibration amplitude, the acceleration direction is kept parallel to the valve opening direction, and referring to fig. 4a and 4b, the vibration sensor data in the static state of the fire hydrant is basically noise. Referring to fig. 3a, the vibration amplitude in the valve-opened state is between 2mm and 2.5mm, and referring to fig. 3b, the vibration frequency in the valve-opened state is 9Hz to 9.375 Hz. Of course, the feature value may be any two of the acceleration, the vibration frequency, or the vibration amplitude, for example, the acceleration direction is parallel to the development direction, and the vibration amplitude is between 2mm and 2.5mm, and the more the feature value is selected, the more accurate the determination is.
And S400, before the next acquisition period, the MCU enters a low-power standby state.
In summary, in the embodiment of the present invention, the vibration sensor 200 is installed at the top of the hydrant main body 100, so that the vibration sensor 200 can more accurately monitor vibration data, the vibration sensor 200 is used to determine whether a person opens the valve, when a person opens the valve, acceleration is generated in a specific direction, the characteristic value of the vibration sensor 200 is analyzed in the MCU400, and when the analysis result determines that the valve is opened and the water pressure is normal, the MCU400 generates water theft alarm information and sends the water theft alarm information through the wireless transmission module. MCU400 still gathers fire hydrant water pressure through pressure sensor 300, produces the warning when water pressure is not enough, informs relevant personnel, guarantee fire control safety to only just steal the water and report to the police when water pressure is normal, uncap when avoiding anhydrous and inspect and cause the wrong report.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. An intelligent fire hydrant, comprising:
a fire hydrant main body (100),
the vibration sensor (200) is mounted at the top of the fire hydrant main body (100) and used for collecting vibration data of the fire hydrant;
a pressure sensor (300), the pressure sensor (300) being mounted within a water intake of the hydrant for acquiring pressure data within a conduit;
the MCU (400) is respectively and electrically connected with the vibration sensor (200) and the pressure sensor (300) and used for receiving vibration data and pressure data, and judging whether the fire hydrant main body (100) is in an open valve state or not according to the vibration data and the pressure data;
and the wireless transmission module (500), the wireless transmission module (500) is connected with the MCU (400) for communicating with the master station.
2. The intelligent fire hydrant in claim 1, wherein: the vibration data includes acceleration, vibration frequency, and vibration amplitude.
3. The intelligent fire hydrant in claim 1, wherein: the fire hydrant is characterized in that a flow switch device (600) is further arranged in the fire hydrant main body (100), and the flow switch device (600) is connected with the MCU (400) to be used for realizing water quantity control.
4. The intelligent fire hydrant in claim 1, wherein: the sensing direction of the vibration sensor (200) is parallel to the valve opening direction of the fire hydrant main body (100).
5. The intelligent fire hydrant in claim 1, wherein: the wireless transmission device further comprises a battery module, and the battery module is used for supplying power to the MCU (400), the wireless transmission module (500), the vibration sensor (200) and the pressure sensor (300).
6. The intelligent fire hydrant in claim 1, wherein: the bottom of the fire hydrant main body (100) is provided with a fire hydrant bottom valve (700), and the fire hydrant bottom valve (700) is used for being connected with the water inlet pipe.
7. The intelligent fire hydrant in claim 6, wherein: the fire hydrant bottom valve (700) is fixed on the water inlet pipe through a nodular cast iron flange (800).
8. A fire hydrant monitoring method, comprising the steps of:
s100, initializing a system, and enabling the MCU to alternately enter a pressure sensor acquisition period and a vibration sensor acquisition period;
s200, comparing the pressure data with a preset pressure threshold value by the MCU, if the pressure data is smaller than the pressure threshold value, sending a low water pressure alarm to a background main station, and if the pressure data is higher than the pressure threshold value, not acting;
and S300, comparing the vibration data with the valve opening characteristic parameters by the MCU, and if the valve opening characteristic parameters are met and the pressure data is higher than a pressure threshold value at the moment, sending a valve opening alarm to a background main station, otherwise, not performing action.
9. A fire hydrant monitoring method according to claim 8, wherein: the opening valve characteristic parameters in the step S300 include at least 2 of acceleration, vibration frequency, and vibration amplitude.
10. A fire hydrant monitoring method according to claim 8 or 9, wherein: the open valve characteristic parameters in the step S300 are as follows: the acceleration direction is parallel to the valve opening direction, the vibration amplitude is between 2mm and 2.5mm, and the vibration frequency is between 9Hz and 9.375 Hz.
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| CN202110032469.3A CN112791339A (en) | 2021-01-11 | 2021-01-11 | Intelligent fire hydrant and fire hydrant monitoring method |
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| CN202110032469.3A CN112791339A (en) | 2021-01-11 | 2021-01-11 | Intelligent fire hydrant and fire hydrant monitoring method |
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Cited By (1)
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| CN116549902A (en) * | 2023-06-13 | 2023-08-08 | 杭州智缤科技有限公司 | Intelligent hydrant water outlet detection method based on accelerometer |
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