Magnetic sensor monitoring method and device for monitoring gas usage amount in real time

Abstract

The invention belongs to the technical field of fuel gas internet of things, and discloses a magnetic sensor monitoring method for real-time monitoring of fuel gas usage amount, which comprises the following steps: (1) sequentially arranging three magnetic sensors on different horizontal planes of the last character wheel of a fuel gas meter from near to far; (2) when the character wheel rotates, the three magnetic sensors output a high-low level combination according to a specific sequence; (3) determining the reading of the current character wheel by detecting the time sequence change of the high and low level combination; and (4) storing the reading in real time and reporting the reading to a server through a wireless communication module. The invention discloses a magnetic sensor monitoring device for real-time monitoring of gas consumption. The magnetic sensor monitoring device comprises a magnetic sensor array module; a processor; a memory; a wireless communication module; and a display module. According to the invention, the change of the character wheel of the gas meter can be quickly and accurately converted into the change of the gas usage amount, the efficiency is improved, and false detection and missing detection are reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of gas Internet of Things, and particularly relates to a magnetic sensor monitoring method and device for real-time monitoring of gas consumption. Background Technique

[0002] Most of the gas meters installed in the initial stage of the development of urban gas in China are diaphragm gas meters, which have problems such as difficult in-house meter reading and inconvenient management. In the 1990s, in order to solve problems such as in-house meter reading, the research and development of intelligent gas meter technology represented by the IC card pre-payment system began to emerge, starting the first step of the intelligentization of gas meters.

[0003] Currently, the gas meter market in China is in the stage of replacing traditional gas meters with intelligent gas meters. At the same time, the domestic intelligent gas meter technology is constantly developing, and the gap with foreign countries is not large. Both are making efforts to layout in the stage of Internet of Things intelligent gas meters, enhancing the safety, reliability, and intelligence of gas meters.

[0004] In view of this, the company has developed a magnetic sensor monitoring method and device for real-time monitoring of gas consumption, aiming to solve the problem of poor accuracy when the existing gas meters are only equipped with magnetic substances for detection on the number 0 of the last digit wheel, and at the same time taking into account the function of real-time monitoring while improving accuracy. Summary of the Invention

[0005] In order to solve the problems in the related technology, the present application provides a magnetic sensor monitoring method and device for real-time monitoring of gas consumption, aiming to solve the problem of poor accuracy when the existing gas meters are only equipped with magnetic substances for detection on the number 0 of the last digit wheel, and at the same time taking into account the function of real-time monitoring while improving accuracy, and solving the defects mentioned in the background technique.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions: In the first aspect of the disclosed embodiments of the present invention, a magnetic sensor monitoring method for real-time monitoring of gas consumption is provided, including the following steps: (1), Three magnetic sensors are sequentially arranged from near to far on different horizontal planes of the last digit wheel of the gas meter; (2), When the digit wheel rotates, the three magnetic sensors output a high and low level combination in a specific order; (3), Determine the reading of the current digit wheel by detecting the timing change of the high and low level combination; (4), Real-time store and report the reading to the server through a wireless communication module.

[0007] In some exemplary embodiments, in the step (3), the timing change of the high and low level combination includes: (a)When the digit 0 on the dial rotates directly above the first magnetic sensor, the first sensor outputs a high level; (b)When the digit 0 on the dial rotates directly above the second magnetic sensor, the second sensor outputs a high level; (c)When the digit 0 on the dial rotates directly above the third magnetic sensor, the third sensor outputs a high level; (d)Judge the current position of the dial by identifying the combination of the level states of the three sensors.

[0008] In some exemplary embodiments, step (4) further includes: (i)Perform smoothing filtering on the readings; (ii)Real-time display the processed gas consumption data through the LCD.

[0009] In the second aspect of the disclosed embodiments of the present invention, a magnetic sensor monitoring device for real-time monitoring of gas consumption is provided, which is characterized by including: A magnetic sensor array module, including three magnetic sensors, arranged on different horizontal planes of the last digit wheel of the gas meter in the order from near to far; A processor, electrically connected to the magnetic sensor array module, for receiving and processing the level signals output by the sensors; A memory, connected to the processor, for storing program codes and real-time reading data; A wireless communication module, connected to the processor, for uploading the reading data to the server through the NB-IoT protocol; A display module, configured to real-time display the current gas consumption data.

[0010] In some exemplary embodiments, the circumferential interval angle of the three sensors of the magnetic sensor array module along the rotation direction of the dial is 120 degrees ±5 degrees.

[0011] In some exemplary embodiments, it further includes: A power management module, configured to provide a stable operating voltage to the processor, sensors and wireless communication module; A signal conditioning circuit, arranged between the magnetic sensor and the processor, for amplifying and filtering the level signals.

[0012] In some exemplary embodiments, the algorithms executed by the processor include: A level state capture unit, for real-time detecting the level transitions of the three sensors; A position decoding unit, for parsing the current position of the dial based on a preset level combination timing table; A data verification unit verifies the data validity by the difference between two adjacent readings.

[0013] In some exemplary embodiments, the wireless communication module supports a low-power wake-up mode and automatically activates the communication function when a change in the dial reading is detected.

[0014] Adopting the above technical solution, compared with the prior art, the beneficial effects of the technology of this patent are as follows: The present invention utilizes the sensitivity characteristics of a magnetic sensor to a magnet to achieve real-time monitoring of changes in the gas meter reading without modifying the original structure of the gas meter and to implement the function of remote meter reading. In addition, the present invention can quickly and accurately convert the change of the gas meter dial into the change of the gas consumption, improving the efficiency and reducing false detection and missed detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings herein are incorporated into and constitute a part of this specification, showing embodiments consistent with the present invention and, together with the specification, are used to explain the principles of the present invention.

[0016] Figure 1 It is a structural block diagram of the gas meter used in the present invention.

[0017] Figure 2 It is a flowchart of the method of the present invention.

[0018] Figure 3 It is a principle block diagram of the device of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0020] Embodiment 1

[0021] As Figure 3 shown, a magnetic sensor monitoring device for real-time monitoring of gas consumption includes a magnetic sensor array module, a processor, a memory, a wireless communication module, a display module, a power management module, and a signal conditioning circuit.

[0022] The magnetic sensor array module includes three magnetic sensors, which are arranged on different horizontal planes of the last digit wheel of the gas meter in the order from near to far. The circumferential angular intervals of the three sensors of the magnetic sensor array module along the rotation direction of the dial are 120 degrees ±5 degrees.

[0023] A processor, electrically connected to the magnetic sensor array module, is configured to receive and process the level signals output by the sensors. The processor includes: a level status capture unit for detecting the level transitions of three sensors in real time; a position decoding unit for parsing the current dial position based on a preset timing table of level combinations; and a data verification unit for verifying the data validity through the difference between two adjacent readings.

[0024] Correspondingly, the processor is configured to execute a capture algorithm. The capture algorithm further includes: a method for detecting the changes in the output levels of three magnetic sensors; a method for detecting the state transitions caused by the changes in the dial; and a method for displaying the cyclic change of the last digit of the gas meter data from 0 - 1 - 3 - 8.

[0025] The processor is also configured to: detect the high - low level changes of the magnetic sensors caused by the changes in the dial; execute the capture algorithm to convert the high - low level changes of the magnetic sensors into digital changes; and process and send the gas meter readings in the memory to the wireless module.

[0026] A memory, connected to the processor, is configured to store program codes and real - time reading data. The memory is also configured to: store the program codes of the capture algorithm; store the gas meter readings before use; and store the gas meter readings after use.

[0027] A wireless communication module, connected to the processor, is configured to upload the reading data to the server via the NB - IoT protocol. The wireless data transmission device supports: a serial communication protocol for receiving the gas meter reading data sent by the processor; and a TCP / IP protocol for sending the gas meter reading data to the server. The wireless communication module supports a low - power wake - up mode and automatically activates the communication function when detecting changes in the dial readings.

[0028] A display module, configured to display the current gas consumption data in real time. The display module uses an LCD display screen. The LCD display screen supports: synchronously displaying the 5 - digit m 3 data of the black dial of the gas meter and the 3 - digit dm 3 data; when the last digit of the dial changes, generating data changes from 0 - 1 - 3 - 8 according to the rotation angle.

[0029] A power management module, configured to provide a stable operating voltage to the processor, sensors, and wireless communication module.

[0030] A signal conditioning circuit, arranged between the magnetic sensor and the processor, is configured to amplify and filter the level signals.

[0031] The timing changes in the high - low level combinations of the three sensors include: (a) When the digit 0 on the dial rotates to directly above the first magnetic sensor, the first sensor outputs a high level.

[0032] (b)When the digit 0 on the dial wheel rotates directly above the second magnetic sensor, the second sensor outputs a high level.

[0033] (c)When the digit 0 on the dial wheel rotates directly above the third magnetic sensor, the third sensor outputs a high level.

[0034] (d)The current position of the dial wheel is determined by identifying the combination of the level states of the three sensors.

[0035] Principle of operation: As Figure 1 shown, three magnetic sensors are placed in a vertical straight line at a certain distance apart to form a magnetic sensor detection device. The detection device integrates a processor, a memory, a display module, and a wireless transmission module.

[0036] The magnetic sensor detection device is placed below the dial wheel of the gas meter, and it is ensured that the positions of the three magnetic sensors are in a straight line with the last digit wheel of the gas meter dial wheel.

[0037] When gas is used, the dial wheel of the gas meter starts to rotate. The last digit wheel of the gas meter dial wheel starts to rotate first. When the digit 0 on the last digit wheel rotates, as the distance from the magnetic sensor changes from near - far - near, the three magnetic sensors will respectively show different high and low level changes.

[0038] When the dial wheel of the gas meter starts to rotate, the magnetic digit 0 approaches the magnetic sensor. The magnetic sensor U13 closest to the dial wheel will change from outputting a high level to outputting a low level. As the digit 0 gets closer, the magnetic sensor U8 will also change from outputting a high level to outputting a low level. When the magnetic property of the digit 0 affects all magnetic sensors, the magnetic sensor U12 will also change from outputting a high level to outputting a low level.

[0039] As the last digit wheel of the gas meter dial wheel continues to rotate, the magnetic digit 0 will move farther away from the magnetic sensor detection device. The magnetic sensor u12, which is the farthest from the digit 0, first fails to detect magnetism, and the output state of u12 changes from low level to high level. Subsequently, the magnetic sensors u8 and u13 also change their output states from low level to high level in the order of distance. At this point, the last digit wheel of the gas meter rotates one full circle. According to the principle of carry, the second - last digit wheel of the gas meter also rotates by the digit 1, and the gas usage increases by 10 dm 3 .

[0040] Embodiment 2

[0041] As Figure 2 shown, the magnetic sensor monitoring method for real - time monitoring of gas usage is implemented based on the magnetic sensor monitoring device for real - time monitoring of gas usage.

[0042] When the device starts running, the initial data of the gas meter dial will be sent to the processor by the server, and the processor will judge which state it is in according to the data of the last digit of the dial.

[0043] Suppose it is currently in the first state 0, the last digit of the dial is the number 0, and the external outputs of the three magnetic sensors u13, u8, and u12 are all high levels. In this state, the processor continuously judges whether the magnetic sensors u13 and u8 become low levels while u12 remains high. Once this target situation is detected, the processor will immediately adjust to the next state 1, and the last digit of the gas meter monitoring reading will change from 0 to 1.

[0044] When the processor is in state 1, it will continuously judge that the magnetic sensors u13, u8, and u12 all output high levels. Once this target situation is detected, the processor will immediately adjust to the next state 3, and the last digit of the gas meter monitoring reading will change from 1 to 3.

[0045] When the processor is in state 3, it will continuously judge whether the magnetic sensor u13 becomes low level while u8 and u12 output high levels. Once this target situation is detected, the processor will immediately adjust to the next state 8, and the last digit of the gas meter monitoring reading will change from 3 to 8.

[0046] When the processor is in state 8, it will continuously judge that the magnetic sensors u13, u8, and u12 all output high levels. Once this target situation is detected, the processor will immediately adjust to the initial state 0, and the last digit of the gas meter monitoring reading will change from 8 to 0. At this point, one rotation of the last digit of the gas meter dial ends, and the penultimate dial rotates 1.

[0047] And so on. Subsequently, during the gas usage process, as the dial continuously changes, the gas meter reading also changes accordingly, so as to achieve the function of real-time monitoring of gas usage.

[0048] Determine the reading of the current dial, store it in real time, perform smoothing filtering processing on the reading, and report the reading to the server through the wireless communication module.

[0049] Specific example: The initial value of the gas meter is 00000m 3 , 000dm 3 , when the gas meter rotates and reaches the detection range of the number 1, the last digit of the dial shows the number 1, and the gas meter detection data will become 00000m 3 , 001dm 3 , when it reaches the detection range of the number 3, the gas meter detection data will become 00000m 3 , 003dm 3 , when it reaches the detection range of the number 8, the gas meter detection data will become 00000m3 , 008 dm 3 , After continuing to rotate for one more circle to complete, the gas meter detection data becomes 00000 m 3 , 010 dm 3 .

[0050] Those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the invention herein. This application is intended to cover any variations, uses, or adaptations of the present invention, which follow the general principles of the present invention and include known common knowledge or conventional technical means in the technical field not invented by the present invention. The specification and examples are only regarded as exemplary, and the true scope and spirit of the present invention are pointed out by the appended claims.

[0051] It should be understood that the present invention is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

Claims

1. A magnetic sensor monitoring method for real-time monitoring of gas usage, characterized in that: The following steps are involved: (1) Three magnetic sensors are arranged on different horizontal planes of the last digit wheel of the gas meter from near to far; (2) When the character wheel rotates, the three magnetic sensors output a combination of high and low levels in a specific order; (3) Determine the current character wheel reading by detecting the timing change of the high and low level combination; (4) Real-time storage and reporting of the readings to a server via a wireless communication module.

2. The magnetic sensor monitoring method for real-time monitoring of gas usage according to claim 1 is characterized in that: In step (3), the timing change of the high and low level combination includes: (a) When the character wheel number 0 rotates to the top of the first magnetic sensor, the first sensor outputs a high level; (b) When the character wheel number 0 rotates to the top of the second magnetic sensor, the second sensor outputs a high level; (c) When the character wheel number 0 rotates to the top of the third magnetic sensor, the third sensor outputs a high level; (d) Determine the current character wheel position by identifying the level state combination of the three sensors.

3. The magnetic sensor monitoring method for real-time monitoring of gas usage according to claim 2 is characterized in that: The step (4) further includes: (i) performing smoothing filtering on the readings; (ii) Real-time display of processed gas usage data via LCD.

4. A magnetic sensor monitoring device for real-time monitoring of gas usage, characterized in that: include: The magnetic sensor array module includes three magnetic sensors, which are arranged on different horizontal planes of the last digit wheel of the gas meter in order from near to far; A processor, electrically connected to the magnetic sensor array module, for receiving and processing the level signal output by the sensor; A memory, connected to the processor, for storing program codes and real-time reading data; A wireless communication module, connected to the processor, for uploading the reading data to a server via the NB-IoT protocol; The display module is configured to display current gas usage data in real time.

5. The magnetic sensor monitoring device for real-time monitoring of gas usage according to claim 4, characterized in that: The circumferential spacing angle of the three sensors of the magnetic sensor array module along the rotation direction of the character wheel is 120 degrees ± 5 degrees.

6. The magnetic sensor monitoring device for real-time monitoring of gas usage according to claim 4, characterized in that: The device also includes: A power management module, configured to provide a stable operating voltage to the processor, sensor and wireless communication module; The signal conditioning circuit is arranged between the magnetic sensor and the processor, and is used for amplifying and filtering the level signal.

7. The magnetic sensor monitoring device for real-time monitoring of gas usage according to claim 4, characterized in that: The algorithm executed by the processor includes: The level state capture unit is used to detect the level jumps of the three sensors in real time; A position decoding unit, which parses the current character wheel position based on a preset level combination timing table; The data verification unit verifies the validity of the data by the difference between two adjacent readings.

8. The magnetic sensor monitoring device for real-time monitoring of gas usage according to claim 4, characterized in that: The wireless communication module supports a low-power wake-up mode and automatically activates the communication function when a change in the word wheel reading is detected.

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