CN209978987U - Novel gas metering device - Google Patents
Novel gas metering device Download PDFInfo
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- CN209978987U CN209978987U CN201921036078.3U CN201921036078U CN209978987U CN 209978987 U CN209978987 U CN 209978987U CN 201921036078 U CN201921036078 U CN 201921036078U CN 209978987 U CN209978987 U CN 209978987U
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Abstract
The utility model discloses a novel gas metering device, which comprises a sensor, a signal acquisition unit, a signal processing module, an A/D conversion module, an external power supply, a microcontroller, an output module and a storage module, wherein the sensor comprises a main sensor module and an auxiliary sensor module, the auxiliary sensor module comprises a temperature sensor, a pressure sensor, a remote wireless communication module, a data metering and processing module, the output end of the sensor is electrically connected with the input end of the signal acquisition unit, the signal acquisition unit acquires signals measured by the sensor and transmits the signals to the signal processing module, the device avoids losing accuracy due to magnetic field interference when in use by arranging a first secondary coil, a second secondary coil and a third secondary coil in the main sensor module and adopting the design of an anti-static magnetic field and an alternating magnetic field, and thus the robustness of the entire device is better.
Description
Technical Field
The utility model relates to a novel gas metering device belongs to the gas measurement field.
Background
With the continuous development of the social economy of China, the construction strength of town gas infrastructure is increased everywhere, the city gas business of China is developed rapidly, and the consumption of the town gas is promoted rapidly. The domestic current gas meter is mainly represented by a common diaphragm gas meter, and adopts a pulse generator consisting of a magnetic sensing assembly, such as a reed switch, so that the static power consumption is almost zero, the service life is long, and the gas meter has obvious advantages in the field of low-power consumption intelligent gas metering. The traditional mechanical gas meter is provided with a reed switch and a magnet, and when the magnet is close to the reed switch, the reed switch is closed; when the magnet leaves, the reed switch is opened, so that a metering pulse signal is output. The accuracy of measurement is relevant with the accuracy of pulse quantity, when meetting that the condition such as magnet demagnetization, mechanical vibration, external signal interference takes place, all can make the tongue tube open and closed receive the influence to further influence the metering error of gas table.
In order to solve the above-mentioned problem to improve gas metering device's interference killing feature and robustness, the utility model provides a novel gas metering device.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the not enough of existence among the prior art, provide a gas metering device that the interference killing feature is strong and the robustness is good, its simple structure, reasonable in design.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
according to the utility model provides a technical scheme: a novel gas metering device comprises a sensor, a signal acquisition unit, a signal processing module, an A/D conversion module, an external power supply, a microcontroller, an output module and a storage module, wherein the sensor comprises a main sensor module and an auxiliary sensor module, the auxiliary sensor module comprises a temperature sensor, a pressure sensor, a remote wireless communication module, a data metering and processing module, the output end of the sensor is electrically connected with the input end of the signal acquisition unit, the signal acquisition unit acquires signals measured by the sensor and transmits the signals to the signal processing module, the A/D conversion module converts analog signals processed by the signal processing module into digital signals and outputs the digital signals to the microcontroller, the microcontroller processes the signals and outputs the results to the output module and the storage module, and the external power supply provides electric energy for other parts, the main sensor module comprises a main coil, a first secondary coil, a second secondary coil, a third secondary coil, a first signal acquisition unit, a second signal acquisition unit, a third signal acquisition unit, a first signal processing module, a second signal processing module, a third signal processing module, a three-way steel sheet, a phase inverter and an impedance converter, wherein the main coil is distributed on the outer side, the first secondary coil, the second secondary coil and the third secondary coil are distributed on the inner side of the main coil at equal angles and are in a one-third fan-shaped structure, the first secondary coil, the second secondary coil and the third secondary coil are in a Y-shaped structure connected in the middle, the three-way steel sheet is distributed among the first secondary coil, the second secondary coil and the third secondary coil, and the output ends of the first secondary coil, the second secondary coil and the third secondary coil are respectively connected with the first signal acquisition unit, The output ends of the first secondary coil, the second secondary coil and the third secondary coil are respectively connected with the first signal processing module, the second signal processing module and the third signal processing module, and the output ends of the first signal processing module, the second signal processing module and the third signal processing module are combined and connected and finally connected to the impedance converter through the phase inverter.
As a further improvement of the utility model, the microcontroller uses the AT89S52 singlechip as the core, plus peripheral circuit and overload circuit constitution.
As a further improvement, the signal processing module is internally integrated with a first filtering module, a signal amplification module and a second filtering module, the input end of the first filtering module is electrically connected with the output end of the signal acquisition unit, the input end of the signal amplification module is connected with the signal acquisition unit, the output end of the signal amplification module is connected with the second filtering module, the input end of the AD conversion module is electrically connected with the output end of the second filtering module.
As a further improvement, the output module includes display screen, breathing lamp and has the communication interface who communicates with intelligent terminals such as cell-phone, panel computer to the integration has alarm unit.
As a further improvement of the present invention, the external power source is electrically connected to the overload circuit, the overload circuit includes a switch S, a first resistor R1, a second resistor R2, a third resistor R3, a first diode D1, a second diode D2, a third diode D3, a capacitor C, a rectifier module D, and a transistor V, one end of the switch S is connected to the external power source, the other end is connected to the first resistor R1, the other end of the first resistor R1 is simultaneously connected to the anodes of the second resistor R2 and the first diode D1, the cathode of the first diode D1 is simultaneously connected to one end of the capacitor C and the base of the transistor V, the other end of the second resistor R2 is connected to the anode of the second diode D2, the other end of the capacitor C is connected to the cathode of the second diode and finally to the AC terminal of the rectifier module D, the emitter of the transistor V is grounded, the collector is connected with the AC end of the rectifying module D, the V + end of the rectifying module D is connected with the anode of a third diode D3, the V-end is grounded, the cathode of the third diode D3 is connected with a third resistor R3, and the other end of the third resistor R3 is connected with the microcontroller.
Compared with the prior art, the utility model, have following advantage:
1) according to the device, the first secondary coil, the second secondary coil and the third secondary coil are arranged in the main sensor module, and the design of an anti-static magnetic field and an alternating magnetic field is adopted, so that the problem that the accuracy is lost due to magnetic field interference in use is avoided, and the robustness of the whole device is better;
2) a first filtering module and a second filtering module are arranged in a signal processing module in the device, clutter signals generated during sensor acquisition are processed by the aid of the first filtering module, the processed signals are amplified by a signal amplifying module, and new clutter generated in the signal amplifying process is removed again by the aid of the second filtering module, so that errors generated in the data processing process are smaller, and the precision of the gas metering device is higher;
3) the main sensor, the auxiliary sensor, the first filtering module, the signal amplification module and the second filtering module of the device are integrated together respectively, so that the whole device is simpler in structure, lower in failure rate and better in reliability, the device can be used for gas metering and water meter metering, compatibility is better, and the device is wider in use.
Drawings
Fig. 1 is a schematic diagram of the physical structure of the main sensor module of the present invention.
Fig. 2 is a block diagram of the main sensor module structure of the present invention.
Fig. 3 is a schematic diagram of the overall circuit connection of the present invention.
Fig. 4 is an overload circuit diagram of the present invention.
In the figure: 1. a main coil; 2. a first secondary coil; 3. a second secondary coil; 4. three-way steel sheets; 5. a third secondary coil; 6. a first signal processing module; 7. a first signal acquisition unit; 8. a second signal acquisition unit; 9. a second signal processing module; 10. a third signal acquisition unit; 11. an inverter; 12. a third signal processing module; 13. an impedance transformer; 14. a sensor; 15. a main sensor module; 16. a secondary sensor module; 17. a temperature sensor; 18. a pressure sensor; 19. a signal acquisition unit; 20. a signal processing module; 21. a first filtering module; 22. a signal amplification module; 23. a second filtering module; 24. an external power supply; 25. a microcontroller; 26. an output module; 27. a storage module; 28. and an A/D conversion module.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
As shown in fig. 1-4, a novel gas metering device comprises a sensor 14, a signal acquisition unit 19, a signal processing module 20, an a/D conversion module 28, an external power supply 24, a microcontroller 25, an output module 26 and a storage module 27, wherein the sensor 14 comprises a main sensor module 15 and an auxiliary sensor module 16, the auxiliary sensor module 16 comprises a temperature sensor 17, a pressure sensor 18, a remote wireless communication module, a data metering and processing module, an output end of the sensor 14 is electrically connected with an input end of the signal acquisition unit 19, the signal acquisition unit 19 acquires a signal measured by the sensor 14 and transmits the signal to the signal processing module 20, the a/D conversion module 28 converts an analog signal processed by the signal processing module 20 into a digital signal and outputs the digital signal to the microcontroller 25, the microcontroller 25 processes the signal, and outputs the result to an output module 26 and a storage module 27, the external power supply 24 provides electric energy for other parts, the main sensor module 15 includes a main coil 1, a first secondary coil 2, a second secondary coil 3, a third secondary coil 5, a first signal acquisition unit 7, a second signal acquisition unit 8, a third signal acquisition unit 10, a first signal processing module 6, a second signal processing module 9, a third signal processing module 12, a three-way steel sheet 4, an inverter 11 and an impedance converter 13, the main coil 1 is distributed outside, the first secondary coil 2, the second secondary coil 3 and the third secondary coil 5 are distributed in the main coil 1 with equal angles and are in a one-third sector structure, the first secondary coil 2, the second secondary coil 3 and the third secondary coil 5 are in a Y-shaped structure with middle connection, the three-way steel sheet 4 is distributed among the first secondary coil 2, the second secondary coil 3 and the third secondary coil 5, the output ends of the first secondary coil 2, the second secondary coil 3 and the third secondary coil 5 are respectively connected with the first signal acquisition unit 7, the second signal acquisition unit 8 and the third signal acquisition unit 10, the output ends of the first secondary coil 2, the second secondary coil 3 and the third secondary coil 5 are respectively connected with the first signal processing module 6, the second signal processing module 9 and the third signal processing module 12, and the output ends of the first signal processing module 6, the second signal processing module 9 and the third signal processing module 12 are connected in a combining mode and are finally connected to the impedance converter 13 through the inverter 11.
As shown in fig. 3 and 4, the microcontroller 25 uses an AT89S52 single chip microcomputer as a core, and is composed of an additional peripheral circuit and an overload circuit, the overload circuit can implement a not-gate function, the external power supply 24 outputs an electrical signal in a normal state, and outputs an abnormal signal through the not-gate, when an abnormal condition occurs, the switch S is turned off, the electrical signal disappears, and the microcontroller 25 receives a reverse voltage from the capacitor C, so that the overload circuit is started, and the microcontroller 25 is burnt.
As shown in fig. 3, wherein a first filtering module 21, a signal amplifying module 22 and a second filtering module 23 are integrated in the signal processing module 20, the input end of the first filtering module 21 is electrically connected with the output end of the signal acquisition unit 19, the input end of the signal amplification module 22 is connected with the signal acquisition unit 19, the output end of the signal amplification module 22 is connected with the second filtering module 23, the input end of the a/D conversion module 28 is electrically connected to the output end of the second filtering module 23, and the first filtering module 21 is used to process some clutter signals generated during the acquisition of the sensor 14, and the processed signal is amplified by the signal amplifying module 22, new noise generated in the signal amplifying process is removed again by the second filtering module 23, therefore, the error generated in the data processing process is smaller, and the precision of the whole gas metering device is higher.
As shown in fig. 3, the output module 26 includes a display screen, a breathing lamp, and a communication interface for communicating with an intelligent terminal such as a mobile phone or a tablet computer, and integrates an alarm unit, the display screen can display some measured information in real time, and the breathing lamp and the alarm unit can provide warning for people.
As shown in fig. 4, wherein the external power source 24 is electrically connected to an overload circuit, the overload circuit includes a switch S, a first resistor R1, a second resistor R2, a third resistor R3, a first diode D1, a second diode D2, a third diode D3, a capacitor C, a rectifying module D, and a transistor V, one end of the switch S is connected to the external power source 24, the other end of the switch S is connected to the first resistor R1, the other end of the first resistor R1 is connected to the second resistor R2 and the anode of the first diode D1, the cathode of the first diode D1 is connected to one end of the capacitor C and the base of the transistor V, the other end of the second resistor R2 is connected to the anode of the second diode D2, the other end of the capacitor C is connected to the cathode of the second diode and finally to the AC terminal of the rectifying module D, the emitter of the transistor V is grounded, the collector of the rectifying module D is connected to the AC terminal of the rectifying module D, the V + end of the rectifying module D is connected with the anode of a third diode D3, the V-end is grounded, the cathode of the third diode D3 is connected with a third resistor R3, and the other end of the third resistor R3 is connected with the microcontroller 25.
It should be noted that, the utility model relates to a novel gas metering device, in operation, the primary coil 1 sends a pulse in a work cycle, the three coils of the primary coil 2, the secondary coil 3 and the secondary coil 5 present a Y-shaped structure connected in the middle, the reflected three-way steel sheet 4 is also a Y-shaped structure, so the signals sensed by the primary coil 2, the secondary coil 3 and the secondary coil 5 are different when in different positions, thereby the number of turns of the gas meter gear can be accurately obtained, because the static magnetic field can not generate current on the primary coil 1, the primary coil 2, the secondary coil 3, the secondary coil 5 and the three-way steel sheet 4, the whole system can not be disturbed, aiming at the changing magnetic field, because the primary coil 2, the secondary coil 3 and the secondary coil 5 are arranged in a Y shape, the tail ends of the two secondary coils are connected and float, so that the currents generated in each secondary coil cancel each other out, the interference on the main coil 1 is driven by the main coil 1 and an internal circuit through capacitance, so to speak, the two secondary coils are isolated and do not influence the internal circuit, the temperature sensor 17 and the pressure sensor 18 in the secondary sensor module 16 can measure the temperature and the pressure of the gas to compensate the metering data information, the gas physical signals are collected together through the main sensor module 15 and the secondary sensor module 16 and transmitted to the signal processing module 20 through the signal collecting unit 19, the analog signals processed by the signal processing module 20 are converted into digital signals by the A/D conversion module 28 and output to the microcontroller 25, the microcontroller 25 outputs the processed signals to the output module 26 and the storage module 27, and the remote wireless communication module in the secondary sensor module 16 transmits the collected data information back to the system terminal, thereby realize data analysis and monitoring function, data measurement and processing module can realize the ladder function and the relevant function of prepayment on the table, whole device simple structure, and the interference killing feature is strong, and the device not only can be used to the gas measurement, can also be used to the measurement of water gauge to make the compatibility better, use more extensively.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The novel gas metering device is characterized by comprising a sensor (14), a signal acquisition unit (19), a signal processing module (20), an A/D conversion module (28), an external power supply (24), a microcontroller (25), an output module (26) and a storage module (27), wherein the sensor (14) comprises a main sensor module (15) and an auxiliary sensor module (16), the auxiliary sensor module (16) comprises a temperature sensor (17), a pressure sensor (18), a remote wireless communication module and a data metering and processing module, the output end of the sensor (14) is electrically connected with the input end of the signal acquisition unit (19), the signal acquisition unit (19) acquires a signal measured by the sensor (14) and transmits the signal to the signal processing module (20), and the A/D conversion module (28) converts an analog signal processed by the signal processing module (20) into a digital signal, the sensor comprises a microcontroller (25), the microcontroller (25) processes signals and outputs results to an output module (26) and a storage module (27), the external power supply (24) supplies electric energy to other parts, the main sensor module (15) comprises a main coil (1), a first secondary coil (2), a second secondary coil (3), a third secondary coil (5), a first signal acquisition unit (7), a second signal acquisition unit (8), a third signal acquisition unit (10), a first signal processing module (6), a second signal processing module (9), a third signal processing module (12), a three-way steel sheet (4), an inverter (11) and an impedance converter (13), the main coil (1) is distributed on the outer side, and the first secondary coil (2), the second secondary coil (3) and the third secondary coil (5) are distributed on the inner side of the main coil (1) at equal angles, the shape of the three-way steel sheet is a one-third fan-shaped structure, the first secondary coil (2), the second secondary coil (3) and the third secondary coil (5) are of a Y-shaped structure connected in the middle, the three-way steel sheet (4) is distributed among the first secondary coil (2), the second secondary coil (3) and the third secondary coil (5), the output ends of the first secondary coil (2), the second secondary coil (3) and the third secondary coil (5) are respectively connected with the first signal acquisition unit (7), the second signal acquisition unit (8) and the third signal acquisition unit (10), the output ends of the first secondary coil (2), the second secondary coil (3) and the third secondary coil (5) are respectively connected with the first signal processing module (6), the second signal processing module (9) and the third signal processing module (12), and the first signal processing module (6), The output ends of the second signal processing module (9) and the third signal processing module (12) are combined and connected, and finally connected to the impedance transformer (13) through the inverter (11).
2. The novel gas metering device of claim 1, characterized in that: the microcontroller (25) takes an AT89S52 singlechip as a core, and is additionally provided with a peripheral circuit and an overload circuit.
3. The novel gas metering device of claim 1, characterized in that: the signal processing module (20) is internally integrated with a first filtering module (21), a signal amplification module (22) and a second filtering module (23), the input end of the first filtering module (21) is electrically connected with the output end of the signal acquisition unit (19), the input end of the signal amplification module (22) is connected with the signal acquisition unit (19), the output end of the signal amplification module (22) is connected with the second filtering module (23), and the input end of the A/D conversion module (28) is electrically connected with the output end of the second filtering module (23).
4. The novel gas metering device of claim 1, characterized in that: the output module (26) comprises a display screen, a breathing lamp and a communication interface which is communicated with an intelligent terminal such as a mobile phone and a tablet personal computer, and is integrated with an alarm unit.
5. The novel gas metering device of claim 1, characterized in that: the external power supply (24) is electrically connected with an overload circuit, the overload circuit comprises a switch S, a first resistor R1, a second resistor R2, a third resistor R3, a first diode D1, a second diode D2, a third diode D3, a capacitor C, a rectification module D and a triode V, one end of the switch S is connected with the external power supply (24), the other end of the switch S is connected with a first resistor R1, the other end of the first resistor R1 is simultaneously connected with the second resistor R2 and the anode of the first diode D1, the cathode of the first diode D1 is simultaneously connected with one end of the capacitor C and the base of the triode V, the other end of the second resistor R2 is connected with the anode of the second diode D2, the other end of the capacitor C is connected with the cathode of the second diode and finally connected with the AC end of the rectification module D, the emitter of the triode V is grounded, and the collector is connected with the AC end of the rectification module D, the V + end of the rectifying module D is connected with the anode of a third diode D3, the V-end is grounded, the cathode of the third diode D3 is connected with a third resistor R3, and the other end of the third resistor R3 is connected with a microcontroller (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921036078.3U CN209978987U (en) | 2019-07-04 | 2019-07-04 | Novel gas metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921036078.3U CN209978987U (en) | 2019-07-04 | 2019-07-04 | Novel gas metering device |
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| Publication Number | Publication Date |
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| CN209978987U true CN209978987U (en) | 2020-01-21 |
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| CN201921036078.3U Expired - Fee Related CN209978987U (en) | 2019-07-04 | 2019-07-04 | Novel gas metering device |
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- 2019-07-04 CN CN201921036078.3U patent/CN209978987U/en not_active Expired - Fee Related
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