Non-plug-in gas consumption monitoring device

Abstract

The utility model discloses a non-plug-in gas consumption monitoring device which comprises a microcontroller, a communication circuit, a power management circuit, a sound acquisition circuit and a storage circuit, the microcontroller is respectively connected with the communication circuit, the power management circuit, the sound acquisition circuit and the storage circuit; and the power supply management circuit is also connected with the sound acquisition circuit and the communication circuit respectively. According to the utility model, the acquired character wheel rotation sound characteristic data of the gas meter can be uploaded to the server through the NB-IoT module, and then the sound characteristic data are analyzed on the server to construct an analysis and prediction model; and analyzing the gas consumption of the natural gas by using the constructed analysis and prediction model, and finally realizing the identification of the gas consumption of the current user and the prediction of the future gas consumption trend.

Description

Technical Field

[0001] The invention belongs to the field of gas detection and relates to a monitoring device, in particular to a non-insertion type gas monitoring device. Background Art

[0002] The meters used by domestic gas users are mostly IoT gas meters or purely mechanical gas meters, which can only measure gas consumption but cannot analyze user gas consumption, and cannot meet the increasing demand for intelligence. Although the existing intelligent gas meters have flow data monitoring functions, they do not have user gas consumption prediction and analysis functions, and are in urgent need of improvement. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a non-insertion type gas consumption monitoring device to solve the technical problem that the prior art cannot perform gas consumption analysis.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions to achieve the above problems:

[0005] A non-insertion type gas usage monitoring device comprises a microcontroller, a communication circuit, a power management circuit, a sound collection circuit and a storage circuit;

[0006] The microcontroller is connected to the communication circuit, power management circuit, sound collection circuit and storage circuit respectively;

[0007] The power management circuit is also connected to the sound collection circuit and the communication circuit respectively.

[0008] The utility model also includes the following technical features:

[0009] Specifically, the microcontroller includes a chip U4 and a peripheral circuit, and the peripheral circuit includes a capacitor C11, a capacitor C12, a resistor R29 and a crystal oscillator X1;

[0010] Pins 12, 23, 24 and 40 of the chip U4 are respectively connected to the communication circuit; Pin 2 of the chip U4 is connected to the sound collection circuit; Pins 5, 6 and 7 of the chip U4 are respectively connected to the storage circuit; Pin 36 of the chip U4 is respectively connected to one end of the crystal oscillator X1 and one end of the capacitor C11, and Pin 37 of the chip U4 is respectively connected to the other end of the crystal oscillator X1 and one end of the capacitor C12, and the other end of the capacitor C11 and the other end of the capacitor C12 are respectively connected to the ground; Pin 9 of the chip U4 is connected to the power management circuit.

[0011] Furthermore, the communication circuit includes a NB_IoT module U8, a debugging interface J11, a capacitor C9, a polarized capacitor C29, a capacitor C30, a capacitor C31, a capacitor C32, a capacitor C33, a capacitor C34, a capacitor C35, a capacitor C36, a polarized capacitor C45, an antenna ANT1, a resistor R24, a resistor R25, a resistor R7, a resistor R8, a resistor R9, a resistor R26, a resistor R27, a resistor R30, a transistor Q6, a transistor Q8 and a SIM card chip U6;

[0012] Among them, pin 42 and pin 43 of the NB_IoT module U8 are respectively connected to one end of capacitor C30, one end of capacitor C31, one end of capacitor C32, pin 4 of the debugging interface J11, and the negative electrode of the polar capacitor C29; the positive electrode of the polar capacitor C29, the other end of capacitor C30, the other end of capacitor C31 and the other end of capacitor C32 are all connected to the ground;

[0013] Pin 35 of the NB_IoT module U8 is connected to pin 1 of the antenna ANT1, and the remaining pins of the antenna ANT1 are connected to the ground;

[0014] Pin 24 of the NB_IoT module U8 is connected to the positive electrode of the polar capacitor C45, and the negative electrode of the polar capacitor C45 is connected to the ground; Pin 24 of the NB_IoT module U8 is also connected to one end of the resistor R24 ​​and one end of the resistor R30, respectively, and the other end of the resistor R24 ​​is connected to the base of the transistor Q6 and the base of the transistor Q8, respectively; the other end of the resistor R30 is respectively connected to the collector of the transistor Q6, the pin 17 of the NB_IoT module U8 and the pin 3 of the debugging interface J11, and the emitter of the transistor Q6 is connected to the pin 24 of the chip U4; the collector of the transistor Q8 is respectively connected to one end of the resistor R25 and the pin 23 of the chip U4; the other end of the resistor R25 is connected to the power management circuit, and the emitter of the transistor Q8 is respectively connected to the pin 18 of the NB_IoT module U8 and the pin 1 of the debugging interface J11;

[0015] Pin 15 of the NB_IoT module U8 is respectively connected to one end of the resistor R26, one end of the resistor R27, one end of the capacitor C36 and pin 5 of the debug interface J11; the other end of the resistor R26 is connected to pin 12 of the chip U4; the other end of the resistor R27 and the other end of the capacitor C36 are both connected to the ground; pin 2 of the debug interface J11 is connected to the ground;

[0016] Pin 1, pin 27 and pin 34 of the NB_IoT module U8 are all connected to the ground;

[0017] Pin 1 of the SIM card chip U6 is respectively connected to one end of the capacitor C9 and pin 10 of the NB_IoT module U8; the other end of the capacitor C9 is respectively connected to pin 8 of the SIM card chip U6 and pin 14 of the NB_IoT module U8; pin 3 of the SIM card chip U6 is respectively connected to one end of the resistor R9 and one end of the capacitor C35, and pin 6 of the SIM card chip U6 is respectively connected to one end of the resistor R8 and one end of the capacitor C34; pin 7 of the SIM card chip U6 is respectively connected to one end of the resistor R7 and one end of the capacitor C33, and the other end of the resistor R7, the other end of the resistor R8 and the other end of the resistor R9 are respectively connected to pin 12, pin 13 and pin 11 of the NB_IoT module U8; the other end of the capacitor C35, the other end of the capacitor C34 and the other end of the capacitor C33 are all connected to the ground.

[0018] Furthermore, the power management circuit includes a connector J2, a diode D1, a diode D2, a voltage stabilizing chip U3, a capacitor C1, a farad capacitor E1, a farad capacitor E2, a farad capacitor E3, a farad capacitor E4, a resistor R1, a resistor R2, a resistor R3, a voltage stabilizing chip U1, a resistor R5, a resistor R6, a resistor R11, a capacitor C1, a capacitor C2 and a capacitor C3;

[0019] Pin 2 of the connector J2 is connected to the positive electrode of the diode D1, and the negative electrode of the diode D1 is respectively connected to the positive electrode of the diode D2, one end of the input terminal J1, pin 4 of the voltage stabilizing chip U1 and one end of the capacitor C2; the negative electrode of the diode D2 is connected to pin 2 of the voltage stabilizing chip U3; pin 3 of the voltage stabilizing chip U3 is respectively connected to pin 40 of the chip U4, one end of the capacitor C1 and the positive electrode of the farad capacitor E4, and pin 1 of the voltage stabilizing chip U3, the other end of the capacitor C1 and the negative electrode of the farad capacitor E4 are all connected to the ground;

[0020] The other end of the input terminal J1 is respectively connected to the resistor R1 and the positive electrode of the farad capacitor E1; the other end of the resistor R1 is respectively connected to the negative electrode of the farad capacitor E1, the positive electrode of the farad capacitor E2 and one end of the resistor R2; the other end of the resistor R2 is respectively connected to the negative electrode of the farad capacitor E2, the positive electrode of the farad capacitor E3 and one end of the resistor R3; the negative electrode of the farad capacitor E3 and the other end of the resistor R3 are both connected to the ground;

[0021] Pin 3 of the voltage stabilizing chip U1 is connected to pin 9 of the chip U4, and pin 5 of the voltage stabilizing chip U1 is respectively connected to pin 42 of the NB_IoT module U8, pin 43 of the NB_IoT module U8, one end of the resistor R11 and one end of the capacitor C3; pin 1 of the voltage stabilizing chip U1 is respectively connected to one end of the resistor R5 and one end of the resistor R6, and the other end of the resistor R6 is connected to the other end of the resistor R11; pin 2 of the voltage stabilizing chip U1, the other end of the resistor R5, the other end of the capacitor C2 and the other end of the capacitor C3 are all connected to the ground.

[0022] Furthermore, the sound collection circuit includes a power amplifier chip U5, a microphone J3, a resistor R40, a sliding rheostat R21, a resistor R22, a capacitor C20, a capacitor C21, a capacitor C22, a capacitor C40, a capacitor C41, a capacitor C42, a capacitor C43 and a capacitor C44;

[0023] Pin 2 of the microphone J3 is respectively connected to one end of the resistor R40, one end of the capacitor C22 and one end of the capacitor C23, and the other end of the resistor R40 is respectively connected to one end of the capacitor C20, one end of the capacitor C21 and pin 3 of the voltage regulator chip U3; Pin 1 of the microphone J3 is connected to the other end of the capacitor C22; The other end of the capacitor C23 is connected to one end of the sliding rheostat R21, the other end of the sliding rheostat R21 is grounded, and the sliding end of the sliding rheostat R21 is connected to pin 3 of the power amplifier chip U5; Pin 1 of the power amplifier chip U5 is connected to pin 8 of the power amplifier chip U5 via capacitor C40;

[0024] Pin 7 of the power amplifier chip U5 is grounded via capacitor C41; Pin 6 of the power amplifier chip U5 is respectively connected to Pin 3 of the voltage regulator chip U3 and one end of the capacitor C42; Pin 5 of the power amplifier chip U5 is respectively connected to one end of capacitor C43 and one end of capacitor C44; the other end of capacitor C44 is connected to one end of resistor R22, and the other end of resistor C43 is connected to Pin 2 of the chip U4;

[0025] The other end of the capacitor C20, the other end of the capacitor C21, pin 2 of the power amplifier chip U5, pin 4 of the power amplifier chip U5, the other end of the capacitor C41, the other end of the capacitor C42 and the other end of the resistor R22 are all connected to the ground.

[0026] The storage circuit includes a storage module U2, a capacitor C4, a resistor R14 and a resistor R15, wherein pin 1, pin 2, pin 3, pin 4 of the storage module U2 and one end of the capacitor C4 are all connected to the ground; the other end of the capacitor C4 is respectively connected to pin 8 of the storage module U2, pin 5 of the chip U4, one end of the resistor R14 and one end of the resistor R15, and the other end of the resistor R14 is respectively connected to pin 6 of the chip U4 and pin 6 of the storage module U2; the other end of the resistor R15 is respectively connected to pin 7 of the chip U4 and pin 6 of the storage module U5; and pin 7 of the storage module U2 is connected to the ground.

[0027] Compared with the prior art, the present invention has the following beneficial technical effects:

[0028] (1) The utility model collects the sound of the gas meter wheel rotating through a microphone to obtain a sound characteristic value, and stores the collected sound information in the storage chip by setting a storage chip. When an abnormality occurs in the uploaded data, the information in the storage chip is read, and the sound characteristic value is uploaded to the server by setting a communication circuit.

[0029] (2) The utility model uses NB-IoT technology to upload the collected sound feature values.

[0030] The server can perform model training to reduce the amount of computation on the microcontroller, ultimately obtaining the current gas usage and returning it to the device for display, as well as predicting future gas usage information.

[0031] (3) The solution of the utility model has the characteristics of high integration, low power consumption, high performance and high reliability and stability. The overall structure has the characteristics of simple structure, low cost, high bearing capacity, high reliability and easy maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structural principle of the utility model;

[0033] Figure 2 This is a schematic diagram of a microcontroller circuit of the utility model;

[0034] FIG3 is a schematic diagram of the NB-IoT communication circuit of the present invention, wherein FIG3(a) is a structural diagram of the NB-IoT module U8; FIG3(b) is a structural diagram of the power supply of the NB-IoT module; and FIG3(c) is a structural diagram of the SIM card;

[0035] Figure 4 It is a schematic diagram of the power management circuit of the utility model;

[0036] Figure 5 It is the sound collection circuit diagram of the utility model;

[0037] Figure 6 This is a circuit diagram of a storage module of the present utility model.

[0038] The specific contents of the present invention are further explained in detail below in conjunction with embodiments. DETAILED DESCRIPTION

[0039] It should be noted that, unless otherwise specified, all components in the present invention are components known in the art.

[0040] The inventive concept of the utility model is as follows: in order to realize the analysis and prediction of the gas consumption of non-insertion users, the sound of the gas meter's wheel rotation can be automatically collected, and the collected wheel rotation sound feature data can be uploaded to the server via the NB-IoT module, the sound feature data is analyzed on the server and an analysis and prediction model is constructed, and finally the constructed analysis and prediction model is used to analyze the natural gas consumption, thereby realizing the identification of the current user's gas consumption and the prediction of future gas consumption trends.

[0041] Specific embodiments of the present invention are given below. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of this application fall within the protection scope of the present invention.

[0042] Example

[0043] Following the above technical solution, Figures 1 to 6 As shown, this embodiment provides a non-insertion type gas usage monitoring device, including a microcontroller, a communication circuit, a power management circuit, a sound collection circuit and a storage circuit;

[0044] The microcontroller is respectively connected with the communication circuit, the power management circuit, the sound collection circuit and the storage circuit;

[0045] The power management circuit is also connected to the sound collection circuit and the communication circuit respectively.

[0046] Among them, the microcontroller is used to receive the data transmitted by the sound collection circuit and the storage circuit; the received data is processed and sent to the communication module circuit; the communication module circuit can send the received signal to the remote server; the power management circuit is used for power supply. In this embodiment, the power management circuit can supply power to the sound collection circuit, the communication circuit and the microcontroller respectively. The sound collection circuit collects the analog data of the sound of the gas meter wheel rotation by means of a microphone, and then amplifies it through the power amplifier chip, and finally transmits the amplified data (analog quantity) to the chip U4 of the microcontroller. Chip U4 reads the analog data of the wheel rotation sound collected by the sound collection circuit through the ADC interface, and then processes it to obtain a digital signal, and transmits the obtained digital signal to the communication module circuit through algorithm filtering, and finally the communication module circuit sends it to the background server. The storage circuit is used to store the wheel rotation sound data collected by the sound collection circuit. The serial port 1 of the microcontroller is connected to the serial port of the NB-IoT module, and the collected sound signal is uploaded to the background server. The storage circuit controls the switch of the storage chip SIM through pin 5 of the microcontroller chip U4 to reduce power consumption, and realizes data reading through the software simulation IIC timing interface of pins 6 and 7 of the microcontroller chip U4.

[0047] As a preferred solution of this embodiment, Figure 2 As shown, the microcontroller in this embodiment includes a chip U4 (model FM33LC025N) and its peripheral circuits, and the peripheral circuits include a capacitor C11, a capacitor C12, a resistor R29 and a crystal oscillator X1;

[0048] Pins 12, 23, 24 and 40 of chip U4 are respectively connected to the communication circuit; pin 2 of chip U4 is connected to the sound collection circuit; pins 5, 6 and 7 of chip U4 are respectively connected to the storage circuit for storing data; pin 36 of chip U4 is respectively connected to one end of the crystal oscillator X1 and one end of the capacitor C11, pin 37 of chip U4 is respectively connected to the other end of the crystal oscillator X1 and one end of the capacitor C12, the other end of the capacitor C11 and the other end of the capacitor C12 are respectively connected to the ground; pin 9 of chip U4 is connected to the power management circuit.

[0049] Preferably, the values ​​of capacitor C11, capacitor C12 and resistor R29 are 22pF, 22pF and 1K respectively;

[0050] The model of crystal oscillator X1 is 32.768MHZ.

[0051] As a preferred solution of this embodiment, as shown in FIG3(a) and FIG3(b), the communication circuit includes a NB_IoT module U8, a debugging interface J11, a capacitor C9, a polarized capacitor C29, a capacitor C30, a capacitor C31, a capacitor C32, a capacitor C33, a capacitor C34, a capacitor C35, a capacitor C36, a polarized capacitor C45, an antenna ANT1, a resistor R7, a resistor R8, a resistor R9, a resistor R24, a resistor R25, a resistor R26, a resistor R27, a resistor R30, a transistor Q6, a transistor Q8 and a SIM card chip U6;

[0052] Among them, pin 42 and pin 43 of NB_IoT module U8 are connected to form a common connection point, which is respectively connected to one end of capacitor C30, one end of capacitor C31, one end of capacitor C32, pin 4 of debug interface J11, and the negative electrode of polar capacitor C29; the positive electrode of polar capacitor C29, the other end of capacitor C30, the other end of capacitor C31 and the other end of capacitor C32 are all connected to the ground;

[0053] Pin 35 of NB_IoT module U8 is connected to pin 1 of antenna ANT1, and the remaining pins of antenna ANT1 are connected to ground;

[0054] Pin 24 of the NB_IoT module U8 is connected to the positive electrode of the polarized capacitor C45, and the negative electrode of the polarized capacitor C45 is connected to the ground; Pin 24 of the NB_IoT module U8 is also connected to one end of the resistor R24 ​​and one end of the resistor R30, respectively, and the other end of the resistor R24 ​​is connected to the base of the transistor Q6 and the base of the transistor Q8, respectively; the other end of the resistor R30 is connected to the collector of the transistor Q6, pin 17 of the NB_IoT module U8, and pin 3 of the debugging interface J11, respectively; the emitter of the transistor Q6 is connected to pin 24 of the chip U4; the collector of the transistor Q8 is connected to one end of the resistor R25 and pin 23 of the chip U4, respectively; the other end of the resistor R25 is connected to the power management circuit, and the emitter of the transistor Q8 is connected to pin 18 of the NB_IoT module U8 and pin 1 of the debugging interface J11, respectively;

[0055] Pin 15 of NB_IoT module U8 is respectively connected to one end of resistor R26, one end of resistor R27, one end of capacitor C36 and pin 5 of debug interface J11; the other end of resistor R26 is connected to pin 12 of chip U4; the other end of resistor R27 and the other end of capacitor C36 are both connected to ground; pin 2 of debug interface J11 is connected to ground;

[0056] Pin 1, pin 27 and pin 34 of NB_IoT module U8 are all connected to ground;

[0057] As shown in Figure 3(c), pin 1 of the SIM card chip U6 is respectively connected to one end of the capacitor C9 and pin 10 of the NB_IoT module U8; the other end of the capacitor C9 is respectively connected to pin 8 of the SIM card chip U6 and pin 14 of the NB_IoT module U8; pin 3 of the SIM card chip U6 is respectively connected to one end of the resistor R9 and one end of the capacitor C35; pin 6 of the SIM card chip U6 is respectively connected to one end of the resistor R8 and one end of the capacitor C34; pin 7 of the SIM card chip U6 is respectively connected to one end of the resistor R7 and one end of the capacitor C33; the other end of the resistor R7, the other end of the resistor R8 and the other end of the resistor R9 are respectively connected to pin 12, pin 13 and pin 11 of the NB_IoT module U8; the other end of the capacitor C35, the other end of the capacitor C34 and the other end of the capacitor C33 are all connected to the ground.

[0058] Preferably, the models of NB_IoT module U8, debugging interface J11, transistor Q6, transistor Q8 and SIM card chip U6 are BC25 / BC28CNV / UMN202B6, 1X5 / 2.0, MMBT3904, MMBT3904 and telecom patch card respectively, antenna ANT1 is an existing external antenna, capacitor C9, polarized capacitor C29, capacitor C30, capacitor C31, capacitor C32, capacitor C33, capacitor C34, capacitor C35, capacitor C36, polarized capacitor C45, resistor R7, resistor R8, resistor R9, resistor R24, resistor R25, resistor R26, resistor R27, and resistor R30 are 100nf, 100uf, 100nf, 100pf, 18pf, 33pf, 33pf, 33pf, 1nf, 1uf, 22ohm, 22ohm, 22ohm, 10k, 5.1k, 1k, 5.1k, 5.1k respectively.

[0059] As a preferred solution of this embodiment, Figure 4 As shown, the power management circuit includes a connector J2, a diode D1, a diode D2, a voltage stabilizing chip U3, a capacitor C1, a farad capacitor E1, a farad capacitor E2, a farad capacitor E3, a farad capacitor E4, a resistor R1, a resistor R2, a resistor R3, a voltage stabilizing chip U1, a resistor R5, a resistor R6, a resistor R11, a capacitor C1, a capacitor C2 and a capacitor C3;

[0060] Pin 2 of connector J2 is connected to the positive electrode of diode D1, and the negative electrode of diode D1 is respectively connected to the positive electrode of diode D2, one end of input terminal J1, pin 4 of voltage regulator chip U1 and one end of capacitor C2; the negative electrode of diode D2 is connected to pin 2 of voltage regulator chip U3; pin 3 of voltage regulator chip U3 is respectively connected to pin 40 of chip U4, one end of capacitor C1 and the positive electrode of farad capacitor E4, and pin 1 of voltage regulator chip U3, the other end of capacitor C1 and the negative electrode of farad capacitor E4 are all connected to ground;

[0061] The other end of the input terminal J1 is respectively connected to the resistor R1 and the positive electrode of the farad capacitor E1; the other end of the resistor R1 is respectively connected to the negative electrode of the farad capacitor E1, the positive electrode of the farad capacitor E2 and one end of the resistor R2; the other end of the resistor R2 is respectively connected to the negative electrode of the farad capacitor E2, the positive electrode of the farad capacitor E3 and one end of the resistor R3; the negative electrode of the farad capacitor E3 and the other end of the resistor R3 are both connected to the ground;

[0062] Pin 3 of the voltage stabilizing chip U1 is connected to pin 9 of chip U4, and pin 5 of the voltage stabilizing chip U1 is respectively connected to pin 42 of the NB_IoT module U8, pin 43 of the NB_IoT module U8, one end of the resistor R11 and one end of the capacitor C3; pin 1 of the voltage stabilizing chip U1 is respectively connected to one end of the resistor R5 and one end of the resistor R6, and the other end of the resistor R6 is connected to the other end of the resistor R11; pin 2 of the voltage stabilizing chip U1, the other end of the resistor R5, the other end of the capacitor C2 and the other end of the capacitor C3 are all connected to ground.

[0063] Preferably, the model of the voltage regulator chip U1 is RP132H001B, which is used to power the communication module, the model of the voltage regulator chip U3 is A6151K3R-36U14, the model of the diode D1 is M7, and the model of the diode D2 is SS12.

[0064] The values ​​of capacitor C1, capacitor C2, capacitor C3, farad capacitor E1, farad capacitor E2, farad capacitor E3, farad capacitor E4, resistor R1, resistor R2, resistor R3, resistor R5, resistor R6, and resistor R11 are 100nf, 100nf, 100nf, 3v / 1F, 3v / 1F, 3v / 1F, 1000uF / 10V, 1M, 1M, 1M, 30K, 10K, and 100K respectively.

[0065] As a preferred solution of this embodiment, Figure 5 As shown, the sound collection circuit includes an LM368 power amplifier chip U5, a microphone J3, a resistor R40, a sliding rheostat R21, a resistor R22, a capacitor C20, a capacitor C21, a capacitor C22, a capacitor C40, a capacitor C41, a capacitor C42, a capacitor C43 and a capacitor C44;

[0066] Pin 2 of microphone J3 is respectively connected to one end of resistor R40, one end of capacitor C22 and one end of capacitor C23, and the other end of resistor R40 is respectively connected to one end of capacitor C20, one end of capacitor C21 and pin 3 of voltage regulator chip U3; pin 1 of microphone J3 is connected to the other end of capacitor C22; the other end of capacitor C23 is connected to one end of sliding rheostat R21, the other end of sliding rheostat R21 is grounded, and the sliding end of sliding rheostat R21 is connected to pin 3 of power amplifier chip U5; pin 1 of power amplifier chip U5 is connected to pin 8 of power amplifier chip U5 via capacitor C40; pin 7 of power amplifier chip U5 is grounded via capacitor C41; pin 6 of power amplifier chip U5 is respectively connected to pin 3 of voltage regulator chip U3 and one end of capacitor C42; pin 5 of power amplifier chip U5 is respectively connected to one end of capacitor C43 and one end of capacitor C44; the other end of capacitor C44 is connected to one end of resistor R22, and the other end of resistor C43 is connected to pin 2 of chip U4;

[0067] The other end of capacitor C20, the other end of capacitor C21, pin 2 of power amplifier chip U5, pin 4 of power amplifier chip U5, the other end of capacitor C41, the other end of capacitor C42 and the other end of resistor R22 are all connected to ground.

[0068] The model of microphone J3 is AWA14421.

[0069] The values ​​of resistor R40, sliding resistor R21, resistor R22, capacitor C20, capacitor C21, capacitor C22, capacitor C40, capacitor C41, capacitor C42, capacitor C43 and capacitor C44 are 10k, 51k, 1k, 100nf, 100nf, 100nf, 100nf, 100nf, 1uf, 100nf, 10pf respectively.

[0070] As a preferred solution of this embodiment, Figure 6 As shown, the storage circuit includes a storage module U2, a capacitor C4, a resistor R14 and a resistor R15, wherein pin 1, pin 2, pin 3, pin 4 of the storage module U2 and one end of the capacitor C4 are all connected to the ground; the other end of the capacitor C4 is respectively connected to pin 8 of the storage module U2, pin 5 of the chip U4, one end of the resistor R14 and one end of the resistor R15, and the other end of the resistor R14 is respectively connected to pin 6 of the chip U4 and pin 6 of the storage module U2; the other end of the resistor R15 is respectively connected to pin 7 of the chip U4 and pin 6 of the storage module U5; pin 8 of the storage module U2 is also connected to pin 5 of the chip U4; and pin 7 of the storage module U2 is connected to the ground.

[0071] Preferably, the model of the storage module U2 is AT24C1024; the values ​​of the capacitor C4, the resistor R14 and the resistor R15 are 100nf, 10k, and 10k respectively.

[0072] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0073] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A non-insertion fuel gas monitoring device, characterized in that: It includes a microcontroller, a communication circuit, a power management circuit, a sound collection circuit and a storage circuit; The microcontroller is connected to the communication circuit, power management circuit, sound collection circuit and storage circuit respectively; The power management circuit is also connected to the sound collection circuit and the communication circuit respectively.

2. The non-insertion fuel gas monitoring device according to claim 1, characterized in that: The microcontroller includes a chip U4 and a peripheral circuit, wherein the peripheral circuit includes a capacitor C11, a capacitor C12, a resistor R29 and a crystal oscillator X1; Pins 12, 23, 24 and 40 of the chip U4 are respectively connected to the communication circuit; Pin 2 of the chip U4 is connected to the sound collection circuit; Pins 5, 6 and 7 of the chip U4 are respectively connected to the storage circuit; Pin 36 of the chip U4 is respectively connected to one end of the crystal oscillator X1 and one end of the capacitor C11, and Pin 37 of the chip U4 is respectively connected to the other end of the crystal oscillator X1 and one end of the capacitor C12, and the other end of the capacitor C11 and the other end of the capacitor C12 are respectively connected to the ground; Pin 9 of the chip U4 is connected to the power management circuit.

3. The non-insertion fuel gas monitoring device according to claim 2, characterized in that: The communication circuit includes NB_IoT module U8, debugging interface J11, capacitor C9, polarized capacitor C29, capacitor C30, capacitor C31, capacitor C32, capacitor C33, capacitor C34, capacitor C35, capacitor C36, polarized capacitor C45, antenna ANT1, resistor R24, resistor R25, resistor R7, resistor R8, resistor R9, resistor R26, resistor R27, resistor R30, transistor Q6, transistor Q8 and SIM card chip U6; Among them, pin 42 and pin 43 of the NB_IoT module U8 are respectively connected to one end of capacitor C30, one end of capacitor C31, one end of capacitor C32, pin 4 of the debugging interface J11, and the negative electrode of the polar capacitor C29; the positive electrode of the polar capacitor C29, the other end of capacitor C30, the other end of capacitor C31 and the other end of capacitor C32 are all connected to the ground; Pin 35 of the NB_IoT module U8 is connected to pin 1 of the antenna ANT1, and the remaining pins of the antenna ANT1 are connected to the ground; Pin 24 of the NB_IoT module U8 is connected to the positive electrode of the polar capacitor C45, and the negative electrode of the polar capacitor C45 is connected to the ground; Pin 24 of the NB_IoT module U8 is also connected to one end of the resistor R24 ​​and one end of the resistor R30, respectively, and the other end of the resistor R24 ​​is connected to the base of the transistor Q6 and the base of the transistor Q8, respectively; the other end of the resistor R30 is respectively connected to the collector of the transistor Q6, the pin 17 of the NB_IoT module U8 and the pin 3 of the debugging interface J11, and the emitter of the transistor Q6 is connected to the pin 24 of the chip U4; the collector of the transistor Q8 is respectively connected to one end of the resistor R25 and the pin 23 of the chip U4; the other end of the resistor R25 is connected to the power management circuit, and the emitter of the transistor Q8 is respectively connected to the pin 18 of the NB_IoT module U8 and the pin 1 of the debugging interface J11; Pin 15 of the NB_IoT module U8 is respectively connected to one end of the resistor R26, one end of the resistor R27, one end of the capacitor C36 and pin 5 of the debug interface J11; the other end of the resistor R26 is connected to pin 12 of the chip U4; the other end of the resistor R27 and the other end of the capacitor C36 are both connected to the ground; pin 2 of the debug interface J11 is connected to the ground; Pin 1, pin 27 and pin 34 of the NB_IoT module U8 are all connected to the ground; Pin 1 of the SIM card chip U6 is respectively connected to one end of the capacitor C9 and pin 10 of the NB_IoT module U8; the other end of the capacitor C9 is respectively connected to pin 8 of the SIM card chip U6 and pin 14 of the NB_IoT module U8; pin 3 of the SIM card chip U6 is respectively connected to one end of the resistor R9 and one end of the capacitor C35, and pin 6 of the SIM card chip U6 is respectively connected to one end of the resistor R8 and one end of the capacitor C34; pin 7 of the SIM card chip U6 is respectively connected to one end of the resistor R7 and one end of the capacitor C33, and the other end of the resistor R7, the other end of the resistor R8 and the other end of the resistor R9 are respectively connected to pin 12, pin 13 and pin 11 of the NB_IoT module U8; the other end of the capacitor C35, the other end of the capacitor C34 and the other end of the capacitor C33 are all connected to the ground.

4. The non-insertion fuel gas monitoring device according to claim 3, characterized in that: The power management circuit includes a connector J2, a diode D1, a diode D2, a voltage stabilizing chip U3, a capacitor C1, a farad capacitor E1, a farad capacitor E2, a farad capacitor E3, a farad capacitor E4, a resistor R1, a resistor R2, a resistor R3, a voltage stabilizing chip U1, a resistor R5, a resistor R6, a resistor R11, a capacitor C1, a capacitor C2 and a capacitor C3; Pin 2 of the connector J2 is connected to the positive electrode of the diode D1, and the negative electrode of the diode D1 is respectively connected to the positive electrode of the diode D2, one end of the input terminal J1, pin 4 of the voltage stabilizing chip U1 and one end of the capacitor C2; the negative electrode of the diode D2 is connected to pin 2 of the voltage stabilizing chip U3; pin 3 of the voltage stabilizing chip U3 is respectively connected to pin 40 of the chip U4, one end of the capacitor C1 and the positive electrode of the farad capacitor E4, and pin 1 of the voltage stabilizing chip U3, the other end of the capacitor C1 and the negative electrode of the farad capacitor E4 are all connected to the ground; The other end of the input terminal J1 is respectively connected to the resistor R1 and the positive electrode of the farad capacitor E1; the other end of the resistor R1 is respectively connected to the negative electrode of the farad capacitor E1, the positive electrode of the farad capacitor E2 and one end of the resistor R2; the other end of the resistor R2 is respectively connected to the negative electrode of the farad capacitor E2, the positive electrode of the farad capacitor E3 and one end of the resistor R3; the negative electrode of the farad capacitor E3 and the other end of the resistor R3 are both connected to the ground; Pin 3 of the voltage stabilizing chip U1 is connected to pin 9 of the chip U4, and pin 5 of the voltage stabilizing chip U1 is respectively connected to pin 42 of the NB_IoT module U8, pin 43 of the NB_IoT module U8, one end of the resistor R11 and one end of the capacitor C3; pin 1 of the voltage stabilizing chip U1 is respectively connected to one end of the resistor R5 and one end of the resistor R6, and the other end of the resistor R6 is connected to the other end of the resistor R11; pin 2 of the voltage stabilizing chip U1, the other end of the resistor R5, the other end of the capacitor C2 and the other end of the capacitor C3 are all connected to the ground.

5. The non-insertion fuel gas usage monitoring device according to claim 4, characterized in that: The sound collection circuit includes a power amplifier chip U5, a microphone J3, a resistor R40, a sliding resistor R21, a resistor R22, a capacitor C20, a capacitor C21, a capacitor C22, a capacitor C40, a capacitor C41, a capacitor C42, a capacitor C43 and a capacitor C44; Pin 2 of the microphone J3 is respectively connected to one end of the resistor R40, one end of the capacitor C22 and one end of the capacitor C23, and the other end of the resistor R40 is respectively connected to one end of the capacitor C20, one end of the capacitor C21 and pin 3 of the voltage regulator chip U3; Pin 1 of the microphone J3 is connected to the other end of the capacitor C22; The other end of the capacitor C23 is connected to one end of the sliding rheostat R21, the other end of the sliding rheostat R21 is grounded, and the sliding end of the sliding rheostat R21 is connected to pin 3 of the power amplifier chip U5; Pin 1 of the power amplifier chip U5 is connected to pin 8 of the power amplifier chip U5 via capacitor C40; Pin 7 of the power amplifier chip U5 is grounded via capacitor C41; Pin 6 of the power amplifier chip U5 is respectively connected to Pin 3 of the voltage regulator chip U3 and one end of the capacitor C42; Pin 5 of the power amplifier chip U5 is respectively connected to one end of capacitor C43 and one end of capacitor C44; the other end of capacitor C44 is connected to one end of resistor R22, and the other end of resistor C43 is connected to Pin 2 of the chip U4; The other end of the capacitor C20, the other end of the capacitor C21, pin 2 of the power amplifier chip U5, pin 4 of the power amplifier chip U5, the other end of the capacitor C41, the other end of the capacitor C42 and the other end of the resistor R22 are all connected to the ground.

6. The non-insertion fuel gas usage monitoring device according to claim 5, characterized in that: The storage circuit includes a storage module U2, a capacitor C4, a resistor R14 and a resistor R15; Among them, pin 1, pin 2, pin 3, pin 4 of the storage module U2 and one end of the capacitor C4 are all connected to the ground; the other end of the capacitor C4 is respectively connected to pin 8 of the storage module U2, pin 5 of the chip U4, one end of the resistor R14 and one end of the resistor R15, and the other end of the resistor R14 is respectively connected to pin 6 of the chip U4 and pin 6 of the storage module U2; the other end of the resistor R15 is respectively connected to pin 7 of the chip U4 and pin 6 of the storage module U5; pin 8 of the storage module U2 is also connected to pin 5 of the chip U4; pin 7 of the storage module U2 is connected to the ground.

Images