CN115183751A

CN115183751A - Hydrological telemetering device based on dual-channel network communication and data transmission method

Info

Publication number: CN115183751A
Application number: CN202210818893.5A
Authority: CN
Inventors: 王智聪; 张军; 王小龙; 张涛; 石岩; 王昊星; 杨浩; 徐维泽
Original assignee: Xian Research Institute Co Ltd of CCTEG
Current assignee: Xian Research Institute Co Ltd of CCTEG
Priority date: 2022-07-12
Filing date: 2022-07-12
Publication date: 2022-10-14
Anticipated expiration: 2042-07-12
Also published as: CN115183751B

Abstract

The invention discloses a hydrological telemetering device based on dual-channel network communication and a data transmission method, wherein the hydrological telemetering device comprises a power supply circuit, a timing circuit, a central control circuit, a signal acquisition circuit, a data conversion circuit and a communication circuit; the power supply circuit is connected with all circuits in the telemetering device; the timing circuit is connected with the central control circuit; the central control circuit is respectively connected with the signal acquisition circuit, the data conversion circuit and the communication circuit. The hydrological telemetering device uses a method of combining an Internet of things communication system and a Beidou satellite communication system. When data transmission is carried out, the two communication systems can search signals at the same time, automatically compare the intensity of the two signals and select a stronger channel to send data.

Description

Hydrological telemetering device based on dual-channel network communication and data transmission method

Technical Field

The invention relates to the field of hydrological dynamic observation, in particular to a hydrological telemetering device based on dual-channel network communication and a data transmission method.

Background

Hydrological observation is an indispensable means of the mine at present, and the dynamics of underground aquifers can be reflected through the change condition of hydrological parameters of hydrological pilot holes, so that the danger of underground water during coal mining is avoided.

The hydrographic telemeter is a hydrographic parameter automatic observation instrument appearing after manual observation, and is a common device for automatic monitoring of coal mine hydrographic information at present. The telemeter needs to transmit data by means of public network signals. When three operators transact the SIM, the three operators all need real-name authentication, and the problem of transmission interruption after the SIM card is cancelled exists. Meanwhile, as the number of the existing coal mines is large, part of hydrological long observation holes of the coal mines are located in mountainous areas, gobi and the like, the signal coverage is poor, and the communication is difficult. If the Beidou communication system is used for transmission, the equipment is required to be in an open area.

Disclosure of Invention

In view of the above disadvantages, the present invention provides a hydrological telemetering apparatus and a data transmission method for dual-channel network communication. The hydrological telemetering device uses a method of combining an Internet of things communication system and a Beidou satellite communication system. When data transmission is carried out, the two communication systems can search signals at the same time, automatically compare the intensity of the two signals and select a stronger channel for data transmission. When the internet of things card is handled, real-name authentication is not needed, the advantages of the two communication systems are complementary, the problem that transmission is interrupted after the SIM card is cancelled can be solved, meanwhile, the problem that public network signals cover poor local communication and the problem that the Beidou system can not communicate can be solved, the selectivity is stronger, the transmission efficiency is higher, and the system is more stable.

The invention is realized by the following steps:

a hydrological telemetering device based on dual-channel network communication comprises a power supply circuit, a timing circuit, a central control circuit, a signal acquisition circuit, a data conversion circuit and a communication circuit;

the power supply circuit supplies power to other functional circuits; the timing circuit is connected with the central control circuit; the central control circuit is respectively connected with the signal acquisition circuit, the data conversion circuit and the communication circuit.

Optionally, the timing circuit provides stable time information for the telemetry device, and when a set time interval is up, a trigger signal is generated, and the signal is transmitted to the central control circuit, the central control circuit controls the signal acquisition circuit to acquire data in an electric signal form, then the central control circuit transmits the acquired physical quantity to the data conversion circuit to perform calculation processing and analog-to-digital conversion, and transmits the converted data through the communication circuit;

when carrying out data transmission, central control circuit still can select the better passageway of signal to carry out data transmission through the intensity of comparison thing networking signal and big dipper signal, can check simultaneously whether data send successfully, can automatic resend when sending the failure.

Optionally, the power supply circuit is provided with a first-stage amplification circuit, a second-stage amplification circuit, a third-stage amplification circuit and a power output circuit; the primary amplifying circuit is used for amplifying the input power supply voltage for one time; the secondary amplifying circuit is used for carrying out secondary amplification treatment on the input power supply voltage; the three-stage amplifying circuit is used for amplifying the input power voltage for three times; the power output circuit is used for dividing and charging the processed voltage signal so as to supply the voltage signal to each part of the circuit;

specifically, the method comprises the following steps of; one end of the capacitor C1 is connected with the positive electrode of the direct current input, and the other end of the capacitor C1 is connected with the first end of the resistor R1; the second end of the resistor R2 is connected with the negative pole of the direct current input and grounded; one end of the resistor R2 is connected with the positive electrode of the direct current input, and the other end of the resistor R2 is connected with the collector electrode of the triode Q1 and grounded; one end of the resistor R3 is connected with the second end of the resistor R2, and the other end of the resistor R3 is connected with the base electrode of the triode Q1 and the collector electrode of the triode Q3; the anode of the diode D1 is connected with the second end of the resistor R2, and the cathode of the diode D1 is connected with the second end of the resistor R3; one end of the capacitor C2 is connected with the second end of the resistor R2, and the other end of the capacitor C2 is connected with the first end of the resistor R4; the second end of the resistor R4 is connected with the base electrode of the triode Q2; one end of the capacitor C3 is connected with the DC input negative electrode, and the other end of the capacitor C3 is connected with the collector of the triode Q2; one end of the resistor R5 is connected with an emitting electrode of the triode Q1, and the other end of the resistor R5 is connected with the first end of the capacitor C6; the second end of the capacitor C6 is connected with the positive electrode of the direct current output; the cathode of the diode D2 is connected with the second end of the resistor R5, and the anode of the diode D2 is connected with the emitter of the triode Q3; one end of the capacitor C4 is connected with the anode of the diode D2, and the other end of the capacitor C4 is connected with the emitting electrode of the triode Q2; one end of the resistor R6 is connected with the base electrode of the triode Q3, and the other end of the resistor R6 is connected with the emitting electrode of the triode Q2; one end of the resistor R7 is connected with the second end of the resistor R5, and the other end of the resistor R7 is connected with the first end of the capacitor C5; and the second end of the capacitor C5 is connected with the emitting electrode of the triode Q2 and is connected with the negative electrode of the direct current output.

Optionally, the timing circuit is provided with a chip U1, the type of the chip U1 is EC200107-075B-0a81 timing chip, and a rectifying circuit, a clock circuit and a control circuit are respectively connected in series with the chip U1; the rectifier circuit is used for rectifying the signal to enable the voltage to be a forward voltage signal; the clock circuit is used for providing accurate time information and ensuring the generation of a trigger signal; the control circuit is used for controlling data transmission, when a set time interval is up, the clock circuit can provide accurate time information, and the control circuit transmits signals to the central control circuit in time so as to collect and transmit signals in time;

the method specifically comprises the following steps: one end of the capacitor C1 is connected with a power supply V1, and the other end of the capacitor C1 is connected with the first end of the resistor R4; the second end of the resistor R4 is connected with a No. 2 pin of the chip U1; one end of the resistor R1 is connected with a power supply V1, and the other end of the resistor R1 is connected with the first end of the resistor R2; the second end of the resistor R2 is connected with No. 7 and No. 8 pins of the chip U1; the cathode of the diode D1 is connected with the second end of the resistor R1, and the anode of the diode D1 is connected with the first end of the capacitor C2; the second end of the capacitor C2 is grounded; the cathode of the diode D2 is connected with the anode of the diode D1, and the anode of the diode D2 is connected with the No. 1 pin of the chip U1; one end of the resistor R3 is connected with the first end of the resistor R2, and the other end of the resistor R3 is connected with the No. 1 pin of the chip U1; the anode of the diode D3 is connected with the second end of the resistor R2, and the cathode of the diode D3 is connected with the first end of the resistor R7; the second end of the resistor R7 is connected with a No. 6 pin of the chip U1; one end of the resistor R6 is connected with a No. 6 pin of the chip U1, and the other end of the resistor R6 is connected with a No. 5 pin of the chip U1; one end of the capacitor C4 is connected with a No. 6 pin of the chip U1, and the other end of the capacitor C4 is grounded; one end of the capacitor C3 is connected with a No. 3 pin of the chip U1, and the other end of the capacitor C3 is grounded; one end of the resistor R5 is connected with the No. 4 pin of the chip U1, and the other end of the resistor R5 is grounded.

Optionally, the central control circuit is provided with a chip U1 and a chip U2, the model of the chip U1 is UC3844, the model of the chip U2 is PC817, the chip U1 and the chip U2 are respectively connected to the control sensor circuit, the control communication circuit, the filter circuit, the rectifier circuit and the control storage circuit, and the rectifier circuit is used for rectifying a voltage signal and controlling a current direction; the filter circuit is used for filtering the voltage signal to reduce circuit interference; the control communication circuit is used for transmitting signals through the control communication part circuit; the control storage circuit is used for storing and deleting data by controlling the storage part circuit; the control sensor circuit is used for acquiring sensor signals through the control signal acquisition circuit;

the method specifically comprises the following steps: one end of the resistor R1 is connected with the cathode of the diode D1, and the other end of the resistor R1 is connected with a No. 3 pin of the chip U1; one end of the capacitor C1 is connected with the anode of the diode D1, and the other end of the capacitor C1 is grounded; one end of the resistor R2 is connected with the cathode of the diode D1, and the other end of the resistor R2 is connected with the anode of the diode D3; one end of the resistor R3 is connected with the anode of the diode D3, and the other end of the resistor R3 is connected with the No. 2 pin of the chip U1; one end of the capacitor C2 is connected with a No. 2 pin of the chip U1, and the other end of the capacitor C2 is grounded; one end of the capacitor C3 is connected with a No. 3 pin of the chip U1, and the other end of the capacitor C3 is grounded; the No. 3 pin of the chip U1 is simultaneously connected with the first end of a resistor R3 in the signal acquisition circuit; the capacitor C4 is connected with the capacitor C3 in parallel; the anode of the light-emitting diode D2 is connected with No. 1 and No. 8 pins of the chip U1, and the cathode of the light-emitting diode D2 is connected with the first end of the resistor R5; the second end of the resistor R5 is connected with the No. 1 pin of the chip U2; the No. 4 pin of the chip U1 is grounded; a No. 5 pin of the chip U1 is connected with a power supply V1; one end of the resistor R6 is connected with a No. 6 pin of the chip U1 and is connected with a No. 2 pin of the chip U2, and the other end of the resistor R6 is grounded; one end of the resistor R4 is connected with the anode of the diode D3, and the other end of the resistor R4 is grounded; the capacitor C5 is connected with the resistor R4 in parallel; one end of the capacitor C6 is connected with the anode of the diode D3, and the other end of the capacitor C6 is connected with the first end of the resistor R7; the second end of the resistor R7 is connected with a No. 4 pin of the chip U2; one end of the resistor R8 is connected with the cathode of the diode D3, and the other end of the resistor R8 is connected with a No. 4 pin of the chip U2; meanwhile, the No. 4 pin of the chip U2 is connected with the No. 1 pin of an analog-to-digital conversion chip AD in the data conversion circuit; one end of a capacitor C6 is connected with a No. 3 pin of the chip U2 and is connected with a power supply V2, and the other end of the capacitor C6 is grounded; and the No. 7 pin of the chip U1 is connected with the No. 4 pin of the chip U1 in the communication circuit.

Optionally, the signal acquisition circuit is provided with a primary filtering circuit, and primary filtering processing is performed on the sensor data to eliminate clutter; the secondary filter circuit carries out secondary filter processing on the sensor data to eliminate tip burrs; the first-stage amplifying circuit amplifies the data after the two times of filtering; the secondary amplification circuit performs secondary amplification processing on the data subjected to primary amplification; the third-stage amplifying circuit is used for carrying out third-stage amplification processing on the data after the second amplification; the third filtering circuit further eliminates tip burrs and clutter of the amplified data;

the method specifically comprises the following steps: one end of the resistor R1 is connected with a power supply V1, and the other end of the resistor R1 is connected with the in-phase input end of the operational amplifier A1; one end of the resistor R2 is connected with the second end of the resistor R1, and the other end of the resistor R2 is grounded; the capacitor C1 is connected with the resistor R2 in parallel; the first end of the resistor R3 is connected with a No. 3 terminal of a chip U1 in the central control circuit; the second end of the resistor R3 is connected with the inverting input end of the operational amplifier A1; one end of the capacitor C3 is connected with the reverse input end of the operational amplifier A1, and the other end of the capacitor C2 is connected with the first end of the resistor R5; the second end of the resistor R5 is connected with the output end of the operational amplifier A1 and is connected with the base electrode of the triode Q1; the resistor R4 is connected with the capacitor C2 in parallel; one end of the capacitor C3 is connected with the second end of the resistor R5, and the second end of the capacitor C3 is grounded; one end of the resistor R6 is connected with the power supply V2, and the other end of the resistor R6 is connected with the emitting electrode of the triode Q1 and the homodromous input end of the operational amplifier A2; one end of the resistor R7 is connected with the collector of the triode Q1, and the other end of the resistor R7 is grounded; the inverting input end of the operational amplifier A2 is grounded; one end of the resistor R8 is connected with the output end of the operational amplifier A2, and the other end of the resistor R8 is connected with the first end of the capacitor C4; the second end of the capacitor C4 is connected with the inverting input end of the operational amplifier A3; one end of the resistor R9 is connected with the reverse input end of the operational amplifier A3, and the other end of the resistor R9 is connected with the output end of the operational amplifier A3; the capacitor C5 is connected with the resistor R9 in parallel; the homodromous input end of the operational amplifier A3 is connected with a power supply V3; the output of the operational amplifier A3 is simultaneously connected to the input IN of the data conversion circuit.

Optionally, the data conversion circuit is provided with an analog-to-digital conversion chip AD, and the model of the analog-to-digital conversion chip AD7895 is used; a signal input circuit, a signal sorting circuit and an AD conversion circuit are arranged around the analog-to-digital conversion chip AD; the signal input circuit is used for inputting a control signal; the signal sorting part is used for sorting and calculating the input circuit; the AD conversion circuit is used for converting the electric signals after the arrangement and calculation into digital signals;

the method specifically comprises the following steps: the input end IN is connected with the output end of an operational amplifier A3 IN the signal acquisition circuit; one end of the resistor R1 is connected with the input end IN, and the other end of the resistor R1 is connected with the first end of the capacitor C1; one end of the capacitor C2 is connected with the second end of the capacitor C1, and the other end of the capacitor C2 is connected with the No. 2 pin of the analog-to-digital conversion chip AD; the No. 1 pin of the analog-to-digital conversion chip AD is connected with the No. 4 pin of the chip U2 in the central control circuit; one end of the resistor R2 is connected with a No. 3 pin of the analog-to-digital conversion chip AD, and the other end of the resistor R2 is connected with a first end of the capacitor C3; the second end of the capacitor C3 is grounded; one end of the capacitor C4 is connected with the power supply V1 and is connected with a No. 4 pin of the analog-to-digital conversion chip AD, and the other end of the capacitor C4 is grounded; one end of the capacitor C3 is connected with the second end of the capacitor C1, the other end of the capacitor C3 is connected with the first end of the resistor R3, and the second end of the resistor R3 is connected with the No. 7 pin of the analog-to-digital conversion chip AD; one end of the resistor R5 is connected with a No. 7 pin of the analog-to-digital conversion chip AD, and the other end of the resistor R5 is connected with the output end OUT; the output end OUT is connected with

pins

15 and 16 of a chip U1 in the communication circuit through a serial port device and is connected with

pins

18 and 20 of a chip U2 in the communication circuit; one end of the resistor R4 is connected with a No. 6 pin of the analog-to-digital conversion chip AD, and the other end of the resistor R4 is connected with a No. 7 pin of the analog-to-digital conversion chip AD; one end of the capacitor C5 is connected with a No. 5 pin of the analog-to-digital conversion chip AD, and the other end of the capacitor C5 is grounded; and the No. 8 pin of the analog-to-digital conversion chip AD is connected with a power supply V2.

Optionally, the communication circuit is provided with a chip U1 and a chip U2, the model of the chip U1 is M5313, and the model of the chip U2 is FB3511; an internet of things communication circuit, an internet of things communication power supply circuit, a signal selection circuit, a power amplifier power supply circuit, a Beidou communication power supply circuit and a Beidou communication circuit are arranged around the chip U1 and the chip U2, and the internet of things communication circuit is used for sending and receiving data in an internet of things mode; the Internet of things communication power supply circuit is used for supplying power to the Internet of things circuit; the signal selection circuit is used for selecting a channel with a stronger signal in the Internet of things or Beidou communication to carry out communication work according to the strength of the signal; the power amplifier power supply circuit is used for supplying power to the power amplifier board; the Beidou communication power supply circuit is used for supplying power to the Beidou communication circuit; the Beidou communication circuit is used for sending and receiving data in a Beidou communication mode;

the method specifically comprises the following steps: one end of the resistor R1 is connected with a power supply V1, and the other end of the resistor R1 is connected with a No. 12 pin of the chip U1; one end of the resistor R2 is connected with the power supply V1, and the other end of the resistor R2 is connected with a No. 11 pin of the chip U1; one end of the capacitor C1 is connected with a power supply V1, and the other end of the capacitor C1 is grounded; one end of the resistor R3 is connected with a No. 10 pin of the chip U1, and the other end of the resistor R3 is grounded; the No. 9 pin of the chip U1 is grounded; one end of the resistor R4 is connected with the power supply V2, and the other end of the resistor R4 is connected with a No. 8 pin of the chip U1; one end of the capacitor C3 is connected with the second end of the resistor R4, and the other end of the capacitor C3 is connected with the No. 1 pin of the chip U2; one end of the capacitor C4 is connected with the second end of the resistor R4, and the other end of the capacitor C4 is connected with the No. 2 pin of the chip U2; one end of the capacitor C5 is connected with the second end of the resistor R4, and the other end of the capacitor C5 is connected with the No. 1 pin of the chip U2; one end of a capacitor C6 is connected with the second end of the resistor R4, and the other end of the capacitor C6 is connected with a No. 4 pin of the chip U2; one end of the capacitor C7 is connected with the second end of the resistor R4, and the other end of the capacitor C7 is connected with the No. 5 pin of the chip U2; one end of the resistor R5 is connected with the No. 1 pin of the chip U1, and the other end of the resistor R5 is connected with the second end of the resistor R4; one end of the resistor R6 is connected with the No. 3 pin of the chip U1, and the other end of the resistor R6 is connected with the second end of the resistor R4; one end of the capacitor C2 is connected with the second end of the resistor R4, and the other end of the capacitor C2 is grounded; one end of the resistor R7 is connected with a No. 8 pin of the chip U1, and the other end of the resistor R7 is connected with the power supply V3; one end of the capacitor C8 is connected with the power supply V4, and the other end of the capacitor C8 is connected with pins No. 6, 7, 8 and 9 of the chip U2; one end of the resistor R8 is connected with

pins

10, 11, 12 and 13 of the chip U2, and the other end of the resistor R8 is grounded; one end of a resistor R9 is connected with the power supply V5 and is connected with a No. 14 pin of the chip U2, and the other end of the resistor R9 is connected with the anode of the light-emitting diode D1; the cathode of the light emitting diode D1 is connected with a No. 15 pin of the chip U2;

pins

16, 21 and 22 of the chip U2 are grounded;

pins

15 and 16 of the chip U1 are connected with an OUT end in the data conversion circuit through a serial port device; the No. 2 pin of the chip U1 is suspended; the No. 4 pin of the chip U1 is connected with the No. 7 pin of the U1 in the central control circuit;

pins

5, 6 and 7 of the chip U1 are an Internet of things SIM interface and are connected with an Internet of things SIM card through an SIM card slot;

pins

17 and 19 of the chip U2 are a GPS/RNSS serial port communication interface and are connected with a GPS positioning module;

pins

18 and 20 of the chip U2 are RDSS serial port communication interfaces and are connected with an OUT end in the data conversion circuit through a serial port device; no. 23, no. 24 and No. 25 pins of the chip U2 are Beidou SIM interfaces and are connected with a Beidou SIM card through an SIM card slot.

A hydrological telemetering data transmission method based on double-channel network communication is realized by any hydrological telemetering device based on double-channel network communication, and the specific operation steps are as follows:

the method comprises the following steps: when the time set by the timing circuit is up, the remote measuring device is automatically started;

step two: initializing a system, and automatically detecting whether each part of circuit is normal;

step three: collecting relevant parameters such as water pressure, water temperature and battery electric quantity of a hydrological hole;

step four: performing calculation processing and analog-to-digital conversion on the acquired data;

step five: automatically detecting whether the processed data is valid or not and whether the format is correct or not, if so, carrying out the next step, and if not, returning to the third step;

step six: searching communication signals, and comparing the strength of the signals of the Internet of things and the Beidou channel;

step seven: selecting a channel with a stronger signal, and sending the acquired and processed data;

step eight: and automatically detecting whether the data transmission is successful, if so, carrying out the next step, and if not, returning to the sixth step.

Step nine: the telemetry device automatically shuts down.

The invention has the advantages that:

the invention combines the Internet of things communication system and the Beidou communication system at the same time, automatically selects a strong signal channel for data transmission, can automatically detect whether the data is successfully sent or not, has stronger applicability, can be used for most hydrological observation holes at home, can transmit data stably without interruption, solves the communication problem of remote measuring devices in partial areas, and provides guarantee for mine safety production.

Drawings

FIG. 1 is a block diagram of the system architecture of the present invention;

FIG. 2 is a schematic diagram of a power supply circuit of the present invention;

FIG. 3 is a schematic diagram of a timing circuit of the present invention;

FIG. 4 is a schematic diagram of the central control circuit of the present invention;

FIG. 5 is a schematic diagram of a signal acquisition circuit according to the present invention;

FIG. 6 is a schematic diagram of a data conversion circuit according to the present invention;

FIG. 7 is a schematic diagram of a communication circuit according to the present invention;

FIG. 8 is a flow chart of a telemetry device data transmission method of the present invention.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the accompanying drawings and the implementation modes.

The invention is realized by the following steps: a hydrological telemetering device based on dual-channel network communication and a data transmission method are provided. The hydrological telemetering device based on the double-channel network communication is composed of a power supply circuit, a timing circuit, a central control circuit, a signal acquisition circuit, a data conversion circuit and a communication circuit. The power supply circuit is connected with all circuits in the telemetering device; the timing circuit is connected with the central control circuit; the central control circuit is respectively connected with the signal acquisition circuit, the data conversion circuit and the communication circuit.

The power supply circuit supplies power to a circuit in the telemetering device, the timing circuit provides stable time information for the telemetering device, a trigger signal is generated when a set time interval is up, the signal is transmitted to the central control circuit, the central control circuit controls the signal acquisition circuit to acquire data in an electric signal mode, the data acquisition circuit comprises physical quantities such as water pressure, temperature and battery electric quantity, then the central control circuit sends the acquired physical quantities to the data conversion circuit to perform calculation processing and analog-to-digital conversion, and the converted data are sent through the communication circuit. When carrying out data transmission, central control circuit still can select the better passageway of signal to carry out data transmission through the intensity of comparison thing networking signal and big dipper signal, can check simultaneously whether data send successfully, can automatic resend when sending the failure.

The power supply circuit, as shown in FIG. 2, functions to power all of the circuitry in the telemetry device. The circuit may be subdivided into five hardware circuit elements. The power supply input circuit of the Beidou communication circuit is used for controlling the input of a battery voltage signal and preventing voltage mutation; the primary amplifying circuit is used for amplifying the input power supply voltage for one time; the secondary amplifying circuit is used for carrying out secondary amplification treatment on the input power supply voltage; the three-stage amplifying circuit is used for amplifying the input power voltage for three times; the power output circuit is used for dividing and charging the processed voltage signal so as to supply the voltage signal to each part of the circuit. The triodes Q1, Q2 and Q3 are used for amplifying the voltage signals; the diodes D1, D2 function to control the direction of the current. One end of the capacitor C1 is connected with the positive electrode of the direct current input, and the other end of the capacitor C1 is connected with the first end of the resistor R1; the second end of the resistor R2 is connected with the negative pole of the direct current input and grounded; one end of the resistor R2 is connected with the positive electrode of the direct current input, and the other end of the resistor R2 is connected with the collector electrode of the triode Q1 and grounded; one end of the resistor R3 is connected with the second end of the resistor R2, and the other end of the resistor R3 is connected with the base electrode of the triode Q1 and the collector electrode of the triode Q3; the anode of the diode D1 is connected with the second end of the resistor R2, and the cathode of the diode D1 is connected with the second end of the resistor R3; one end of the capacitor C2 is connected with the second end of the resistor R2, and the other end of the capacitor C2 is connected with the first end of the resistor R4; the second end of the resistor R4 is connected with the base electrode of the triode Q2; one end of the capacitor C3 is connected with the DC input negative electrode, and the other end of the capacitor C3 is connected with the collector of the triode Q2; one end of the resistor R5 is connected with an emitting electrode of the triode Q1, and the other end of the resistor R5 is connected with the first end of the capacitor C6; the second end of the capacitor C6 is connected with the positive electrode of the direct current output; the cathode of the diode D2 is connected with the second end of the resistor R5, and the anode of the diode D2 is connected with the emitter of the triode Q3; one end of the capacitor C4 is connected with the anode of the diode D2, and the other end of the capacitor C4 is connected with the emitting electrode of the triode Q2; one end of the resistor R6 is connected with the base electrode of the triode Q3, and the other end of the resistor R6 is connected with the emitting electrode of the triode Q2; one end of the resistor R7 is connected with the second end of the resistor R5, and the other end of the resistor R7 is connected with the first end of the capacitor C5; and the second end of the capacitor C5 is connected with the emitting electrode of the triode Q2 and is connected with the negative electrode of the direct current output.

The timing circuit, as shown in fig. 3, functions to provide stable time information for the telemetry device, and when a set time interval is up, a trigger signal is generated and transmitted to the central control circuit for collecting, processing and sending data. The model of a chip U1 of the timing circuit is EC200107-075B-0A81 timing chip. The circuit can be subdivided into three hardware circuit units. The rectifying circuit is used for rectifying the signal to enable the voltage to be a forward voltage signal; the clock circuit is used for providing accurate time information and ensuring the generation of a trigger signal; the control circuit is used for controlling data transmission, when a set time interval is up, the clock circuit can provide accurate time information, and the control circuit transmits signals to the central control circuit in time so as to collect and transmit signals in time. The power supply V1 supplies power to the circuit and the chip; the diodes D1, D2, D3 function to control the direction of the current. One end of the capacitor C1 is connected with a power supply V1, and the other end of the capacitor C1 is connected with the first end of the resistor R4; the second end of the resistor R4 is connected with the No. 2 pin of the chip U1; one end of the resistor R1 is connected with a power supply V1, and the other end of the resistor R1 is connected with the first end of the resistor R2; the second end of the resistor R2 is connected with No. 7 and No. 8 pins of the chip U1; the cathode of the diode D1 is connected with the second end of the resistor R1, and the anode of the diode D1 is connected with the first end of the capacitor C2; the second end of the capacitor C2 is grounded; the cathode of the diode D2 is connected with the anode of the diode D1, and the anode of the diode D2 is connected with the No. 1 pin of the chip U1; one end of the resistor R3 is connected with the first end of the resistor R2, and the other end of the resistor R3 is connected with the No. 1 pin of the chip U1; the anode of the diode D3 is connected with the second end of the resistor R2, and the cathode of the diode D3 is connected with the first end of the resistor R7; the second end of the resistor R7 is connected with a No. 6 pin of the chip U1; one end of the resistor R6 is connected with a No. 6 pin of the chip U1, and the other end of the resistor R6 is connected with a No. 5 pin of the chip U1; one end of the capacitor C4 is connected with a No. 6 pin of the chip U1, and the other end of the capacitor C4 is grounded; one end of the capacitor C3 is connected with a No. 3 pin of the chip U1, and the other end of the capacitor C3 is grounded; one end of the resistor R5 is connected with the No. 4 pin of the chip U1, and the other end of the resistor R5 is grounded.

The central control circuit, as shown in fig. 4, is used for controlling the signal acquisition circuit to acquire data according to the time interval of the timing circuit, sending the acquired data to the data conversion circuit, analyzing and processing the data converted by the data conversion circuit, and sending the processing result to the communication circuit for sending. The central control circuit comprises a chip U1 and a chip U2. The model of the chip U1 is UC3844, and the model of the chip U2 is PC817, so that the safety of a circuit can be improved, and the circuit interference is reduced. The circuit can be subdivided into five hardware circuit control units, and the rectifying circuit is used for rectifying voltage signals and controlling the current direction; the filter circuit is used for filtering the voltage signal and reducing circuit interference; the control communication circuit is used for transmitting signals through the control communication part circuit; the control storage circuit is used for storing and deleting data by controlling the storage part circuit; the control sensor circuit is used for collecting sensor signals through the control signal collecting circuit. The power supplies V1 and V2 are used for supplying power to the circuit and each chip; the diodes D1, D2 and D3 are used for controlling the current direction, and the light-emitting diode D2 is displayed by an indicator lamp in the process of controlling the communication circuit; the chip U1 is used for controlling the work of each part of the whole circuit; the chip U2 mainly controls the circuit of the storage part and can increase the safety of the circuit. One end of the resistor R1 is connected with the cathode of the diode D1, and the other end of the resistor R1 is connected with a No. 3 pin of the chip U1; one end of the capacitor C1 is connected with the anode of the diode D1, and the other end of the capacitor C1 is grounded; one end of the resistor R2 is connected with the cathode of the diode D1, and the other end of the resistor R2 is connected with the anode of the diode D3; one end of the resistor R3 is connected with the anode of the diode D3, and the other end of the resistor R3 is connected with the No. 2 pin of the chip U1; one end of the capacitor C2 is connected with the No. 2 pin of the chip U1, and the other end of the capacitor C2 is grounded; one end of the capacitor C3 is connected with a No. 3 pin of the chip U1, and the other end of the capacitor C3 is grounded; the No. 3 pin of the chip U1 is simultaneously connected with the first end of a resistor R3 in the signal acquisition circuit in the figure 5; the capacitor C4 is connected with the capacitor C3 in parallel; the anode of the light emitting diode D2 is connected with pins 1 and 8 of the chip U1, and the cathode of the light emitting diode D2 is connected with the first end of the resistor R5; the second end of the resistor R5 is connected with the No. 1 pin of the chip U2; the No. 4 pin of the chip U1 is grounded; a No. 5 pin of the chip U1 is connected with a power supply V1; one end of the resistor R6 is connected with a No. 6 pin of the chip U1 and is connected with a No. 2 pin of the chip U2, and the other end of the resistor R6 is grounded; one end of the resistor R4 is connected with the anode of the diode D3, and the other end of the resistor R4 is grounded; the capacitor C5 is connected with the resistor R4 in parallel; one end of the capacitor C6 is connected with the anode of the diode D3, and the other end of the capacitor C6 is connected with the first end of the resistor R7; the second end of the resistor R7 is connected with a No. 4 pin of the chip U2; one end of the resistor R8 is connected with the cathode of the diode D3, and the other end of the resistor R8 is connected with the No. 4 pin of the chip U2; meanwhile, pin 4 of the chip U2 is connected to pin 1 of the analog-to-digital conversion chip AD in the data conversion circuit of fig. 6; one end of a capacitor C6 is connected with a No. 3 pin of the chip U2 and is connected with a power supply V2, and the other end of the capacitor C6 is grounded; pin 7 of the chip U1 is connected to pin 4 of the chip U1 in the communication circuit of fig. 7.

The signal acquisition circuit, as shown in fig. 5, functions to acquire water pressure, temperature, battery power, and the like in the form of electric signals. The signal acquisition circuit comprises an operational amplifier A1, an operational amplifier A2 and an operational amplifier A3, wherein the models of the operational amplifiers A1, A2 and A3 are all LM741. The circuit can be subdivided into six hardware circuit control units. The primary filter circuit is used for performing primary filtering processing on the sensor data to eliminate clutter; the secondary filter circuit is used for carrying out secondary filter processing on the sensor data to eliminate tip burrs; the first-stage amplifying circuit is used for amplifying the data after the two times of filtering; the secondary amplification circuit is used for carrying out secondary amplification processing on the data after primary amplification; the third-stage amplifying circuit is used for carrying out amplification processing on the data after the second amplification for three times; the cubic filter circuit is used for further eliminating tip burrs and clutter of the amplified data. Through the triple filtering and the triple amplification processing of the signals, the acquired data can be more accurate, and the requirements of a data conversion circuit are met. Power supplies V1, V2 and V3 in the circuit supply power to each part of the circuit, and the operational amplifiers A1, A2 and A3 and the triode Q1 play a role in signal amplification. One end of the resistor R1 is connected with a power supply V1, and the other end of the resistor R1 is connected with the in-phase input end of the operational amplifier A1; one end of the resistor R2 is connected with the second end of the resistor R1, and the other end of the resistor R2 is grounded; the capacitor C1 is connected with the resistor R2 in parallel; the first end of the resistor R3 is connected with the No. 3 terminal of the chip U1 in the central control circuit in the figure 4; the second end of the resistor R3 is connected with the inverting input end of the operational amplifier A1; one end of the capacitor C3 is connected with the reverse input end of the operational amplifier A1, and the other end of the capacitor C2 is connected with the first end of the resistor R5; the second end of the resistor R5 is connected with the output end of the operational amplifier A1 and is connected with the base electrode of the triode Q1; the resistor R4 is connected with the capacitor C2 in parallel; one end of the capacitor C3 is connected with the second end of the resistor R5, and the second end of the capacitor C3 is grounded; one end of the resistor R6 is connected with the power supply V2, and the other end of the resistor R6 is connected with the emitting electrode of the triode Q1 and the homodromous input end of the operational amplifier A2; one end of the resistor R7 is connected with the collector of the triode Q1, and the other end of the resistor R7 is grounded; the inverting input end of the operational amplifier A2 is grounded; one end of the resistor R8 is connected with the output end of the operational amplifier A2, and the other end of the resistor R8 is connected with the first end of the capacitor C4; the second end of the capacitor C4 is connected with the inverting input end of the operational amplifier A3; one end of the resistor R9 is connected with the reverse input end of the operational amplifier A3, and the other end of the resistor R9 is connected with the output end of the operational amplifier A3; the capacitor C5 is connected with the resistor R9 in parallel; the homodromous input end of the operational amplifier A3 is connected with a power supply V3; the output terminal of the operational amplifier A3 is simultaneously connected to the input terminal IN the data conversion circuit of fig. 6.

The data conversion circuit, as shown in fig. 6, is used for calculating and performing analog-to-digital conversion on electrical signals such as water pressure, temperature, battery power and the like acquired by the signal acquisition circuit. The data conversion circuit comprises an analog-to-digital conversion chip AD, and the model of the analog-to-digital conversion chip AD7895 is used. The circuit can be subdivided into three hardware circuit control units. The signal input circuit is used for inputting a control signal; the signal sorting part is used for sorting and calculating the input circuit; the AD conversion circuit is used for converting the electric signal after finishing and calculation into a digital signal. The power supplies V1 and V2 in the circuit are used for supplying power to all parts of circuits and chips in the circuit. The input end IN is connected with the output end of an operational amplifier A3 IN the signal acquisition circuit of FIG. 5; one end of the resistor R1 is connected with the input end IN, and the other end of the resistor R1 is connected with the first end of the capacitor C1; one end of the capacitor C2 is connected with the second end of the capacitor C1, and the other end of the capacitor C2 is connected with the No. 2 pin of the analog-to-digital conversion chip AD; the No. 1 pin of the analog-to-digital conversion chip AD is connected with the No. 4 pin of the chip U2 in the central control circuit in FIG. 4; one end of the resistor R2 is connected with a No. 3 pin of the analog-to-digital conversion chip AD, and the other end of the resistor R2 is connected with a first end of the capacitor C3; the second end of the capacitor C3 is grounded; one end of the capacitor C4 is connected with the power supply V1 and is connected with a No. 4 pin of the analog-to-digital conversion chip AD, and the other end of the capacitor C4 is grounded; one end of the capacitor C3 is connected with the second end of the capacitor C1, the other end of the capacitor C3 is connected with the first end of the resistor R3, and the second end of the resistor R3 is connected with the No. 7 pin of the analog-to-digital conversion chip AD; one end of the resistor R5 is connected with a No. 7 pin of the analog-to-digital conversion chip AD, and the other end of the resistor R5 is connected with the output end OUT; the output end OUT is connected with pins 15 and 16 of a chip U1 in the communication circuit of fig. 7 through a serial port device, and is connected with pins 18 and 20 of a chip U2 in the communication circuit of fig. 7; one end of the resistor R4 is connected with a No. 6 pin of the analog-to-digital conversion chip AD, and the other end of the resistor R4 is connected with a No. 7 pin of the analog-to-digital conversion chip AD; one end of the capacitor C5 is connected with a No. 5 pin of the analog-to-digital conversion chip AD, and the other end of the capacitor C5 is grounded; and a No. 8 pin of the analog-to-digital conversion chip AD is connected with a power supply V2.

The communication circuit, as shown in fig. 7, is used for searching communication signals and selecting a channel with a stronger signal to send data acquired and processed by the telemetering device according to the strength of the current internet of things signal and the Beidou signal. The communication circuit comprises a chip U1 and a chip U2. The model of the chip U1 is M5313, and the model of the chip U2 is FB3511. The circuit can be subdivided into six hardware circuit control units. The Internet of things communication circuit is used for sending and receiving data in an Internet of things mode; the Internet of things communication power supply circuit is used for supplying power to the Internet of things circuit; the signal selection circuit is used for selecting a channel with a stronger signal in the Internet of things or Beidou communication to carry out communication work according to the strength of the signal; the power amplifier power supply circuit is used for supplying power to the power amplifier board; the Beidou communication power supply circuit is used for supplying power to the Beidou communication circuit; the Beidou communication circuit is used for sending and receiving data in a Beidou communication mode. The power supplies V1, V2, V3, V4 and V5 are used for supplying power to all parts of circuits and chips in the circuits. One end of the resistor R1 is connected with a power supply V1, and the other end of the resistor R1 is connected with a No. 12 pin of the chip U1; one end of the resistor R2 is connected with the power supply V1, and the other end of the resistor R2 is connected with a No. 11 pin of the chip U1; one end of the capacitor C1 is connected with a power supply V1, and the other end of the capacitor C1 is grounded; one end of the resistor R3 is connected with a No. 10 pin of the chip U1, and the other end of the resistor R3 is grounded; the No. 9 pin of the chip U1 is grounded; one end of the resistor R4 is connected with the power supply V2, and the other end of the resistor R4 is connected with a No. 8 pin of the chip U1; one end of the capacitor C3 is connected with the second end of the resistor R4, and the other end of the capacitor C3 is connected with the No. 1 pin of the chip U2; one end of the capacitor C4 is connected with the second end of the resistor R4, and the other end of the capacitor C4 is connected with the No. 2 pin of the chip U2; one end of the capacitor C5 is connected with the second end of the resistor R4, and the other end of the capacitor C5 is connected with the No. 1 pin of the chip U2; one end of a capacitor C6 is connected with the second end of the resistor R4, and the other end of the capacitor C6 is connected with a No. 4 pin of the chip U2; one end of the capacitor C7 is connected with the second end of the resistor R4, and the other end of the capacitor C7 is connected with the No. 5 pin of the chip U2; one end of the resistor R5 is connected with the No. 1 pin of the chip U1, and the other end of the resistor R5 is connected with the second end of the resistor R4; one end of the resistor R6 is connected with the No. 3 pin of the chip U1, and the other end of the resistor R6 is connected with the second end of the resistor R4; one end of the capacitor C2 is connected with the second end of the resistor R4, and the other end of the capacitor C2 is grounded; one end of the resistor R7 is connected with a No. 8 pin of the chip U1, and the other end of the resistor R7 is connected with the power supply V3; one end of the capacitor C8 is connected with the power supply V4, and the other end of the capacitor C8 is connected with pins No. 6, 7, 8 and 9 of the chip U2; one end of the resistor R8 is connected with pins 10, 11, 12 and 13 of the chip U2, and the other end of the resistor R8 is grounded; one end of a resistor R9 is connected with a power supply V5 and is connected with a No. 14 pin of the chip U2, and the other end of the resistor R9 is connected with the anode of the light-emitting diode D1; the cathode of the light emitting diode D1 is connected with a No. 15 pin of the chip U2; pins 16, 21 and 22 of the chip U2 are grounded.

Pins

15 and 16 of the chip U1 are connected with an OUT end in the data conversion circuit in the figure 6 through a serial port device; the No. 2 pin of the chip U1 is suspended; pin 4 of the chip U1 is connected with pin 7 of U1 in the central control circuit of FIG. 4;

pins

5, 6 and 7 of the chip U1 are Internet of things SIM interfaces and are connected with an Internet of things SIM card through an SIM card slot; pins 17 and 19 of the chip U2 are serial port communication interfaces of a GPS/RNSS and are connected with a GPS positioning module; pins 18 and 20 of the chip U2 are RDSS serial port communication interfaces and are connected with an OUT end in the data conversion circuit in the figure 6 through a serial port device; no. 23, no. 24 and No. 25 pins of the chip U2 are Beidou SIM interfaces and are connected with a Beidou SIM card through an SIM card slot.

As shown in fig. 8, the data transmission method has the following specific operation steps:

the method comprises the following steps: when the time set by the timing circuit is up, the telemetering device is automatically started;

step four: carrying out calculation processing and analog-to-digital conversion on the acquired data;

Step nine: the telemetry device is automatically shut down.

The invention solves the communication problem of part of places by combining the telemetering device with the Internet of things communication system and the Beidou satellite communication system. The method can automatically search signals and select a strong signal channel for data transmission, can automatically detect whether the data is successfully sent, has stronger applicability, stable transmission and high speed, and is suitable for most of domestic places.

In the present specification, each embodiment is described in a progressive manner, and all differences from the other embodiments are emphasized. The invention as disclosed above is intended to enable persons skilled in the art to make and use the invention and is susceptible to variations and modifications according to the invention, and therefore the invention is not intended to be limited to the embodiments shown herein, but these variations and modifications are within the scope of the invention.

Claims

1. A hydrological telemetering device based on dual-channel network communication is characterized by comprising a power supply circuit, a timing circuit, a central control circuit, a signal acquisition circuit, a data conversion circuit and a communication circuit;

2. The hydrological telemetering device based on dual-channel network communication according to claim 1, wherein the timing circuit provides stable time information for the telemetering device, and generates a trigger signal when a set time interval is up, and transmits the trigger signal to the central control circuit, the central control circuit controls the signal acquisition circuit to acquire data in the form of an electric signal, and then the central control circuit sends the acquired physical quantity to the data conversion circuit for calculation processing and analog-to-digital conversion, and sends the converted data through the communication circuit;

when carrying out data transmission, central control circuit still can select the better passageway of signal to carry out data transmission through the power of comparison thing networking signal and big dipper signal, can inspect whether data send successfully simultaneously, can automatic resend when sending the failure.

3. The hydrological telemetering device based on the dual-channel network communication according to claim 1 or 2, characterized in that the power supply circuit is provided with a first-stage amplifying circuit, a second-stage amplifying circuit, a third-stage amplifying circuit and a power output circuit; the primary amplifying circuit is used for amplifying the input power supply voltage for one time; the secondary amplifying circuit is used for carrying out secondary amplification treatment on the input power supply voltage; the three-stage amplifying circuit is used for amplifying the input power voltage for three times; the power output circuit is used for dividing and charging the processed voltage signal so as to supply the voltage signal to each part of circuit;

specifically comprises the following steps of; one end of the capacitor C1 is connected with the direct current input anode, and the other end of the capacitor C1 is connected with the first end of the resistor R1; the second end of the resistor R2 is connected with the negative pole of the direct current input and grounded; one end of the resistor R2 is connected with the direct current input anode, and the other end of the resistor R2 is connected with the collector of the triode Q1 and grounded; one end of the resistor R3 is connected with the second end of the resistor R2, and the other end of the resistor R3 is connected with the base electrode of the triode Q1 and the collector electrode of the triode Q3; the anode of the diode D1 is connected with the second end of the resistor R2, and the cathode of the diode D1 is connected with the second end of the resistor R3; one end of the capacitor C2 is connected with the second end of the resistor R2, and the other end of the capacitor C2 is connected with the first end of the resistor R4; the second end of the resistor R4 is connected with the base electrode of the triode Q2; one end of the capacitor C3 is connected with the DC input negative electrode, and the other end of the capacitor C3 is connected with the collector of the triode Q2; one end of the resistor R5 is connected with an emitting electrode of the triode Q1, and the other end of the resistor R5 is connected with the first end of the capacitor C6; the second end of the capacitor C6 is connected with the positive electrode of the direct current output; the cathode of the diode D2 is connected with the second end of the resistor R5, and the anode of the diode D2 is connected with the emitter of the triode Q3; one end of the capacitor C4 is connected with the anode of the diode D2, and the other end of the capacitor C4 is connected with the emitting electrode of the triode Q2; one end of the resistor R6 is connected with the base electrode of the triode Q3, and the other end of the resistor R6 is connected with the emitting electrode of the triode Q2; one end of the resistor R7 is connected with the second end of the resistor R5, and the other end of the resistor R7 is connected with the first end of the capacitor C5; and the second end of the capacitor C5 is connected with the emitting electrode of the triode Q2 and is connected with the negative electrode of the direct current output.

4. The hydrological telemetering device based on the dual-channel network communication according to claim 1 or 2, characterized in that the timing circuit is provided with a chip U1, the type of the chip U1 is EC200107-075B-0A81 timing chip, and a rectifying circuit, a clock circuit and a control circuit are respectively connected in series with the chip U1; the rectifying circuit is used for rectifying the signal to enable the voltage to be a forward voltage signal; the clock circuit is used for providing accurate time information and ensuring the generation of a trigger signal; the control circuit is used for controlling the sending of data, when a set time interval is up, the clock circuit can provide accurate time information, and the control circuit transmits signals to the central control circuit in time so as to collect and send signals in time;

5. The hydrological telemetering device based on the dual-channel network communication of claim 1 or 2, wherein the central control circuit is provided with a chip U1 and a chip U2, the model of the chip U1 is UC3844, the model of the chip U2 is PC817, the chip U1 and the chip U2 are respectively connected with a control sensor circuit, a control communication circuit, a filter circuit, a rectifier circuit and a control storage circuit, and the rectifier circuit is used for rectifying a voltage signal and controlling a current direction; the filter circuit is used for filtering the voltage signal to reduce circuit interference; the control communication circuit is used for transmitting signals through the control communication part circuit; the control storage circuit is used for storing and deleting data by controlling the storage part circuit; the control sensor circuit is used for acquiring sensor signals through the control signal acquisition circuit;

the method specifically comprises the following steps: one end of the resistor R1 is connected with the cathode of the diode D1, and the other end of the resistor R1 is connected with a No. 3 pin of the chip U1; one end of the capacitor C1 is connected with the anode of the diode D1, and the other end of the capacitor C1 is grounded; one end of the resistor R2 is connected with the cathode of the diode D1, and the other end of the resistor R2 is connected with the anode of the diode D3; one end of the resistor R3 is connected with the anode of the diode D3, and the other end of the resistor R3 is connected with the No. 2 pin of the chip U1; one end of the capacitor C2 is connected with the No. 2 pin of the chip U1, and the other end of the capacitor C2 is grounded; one end of the capacitor C3 is connected with a No. 3 pin of the chip U1, and the other end of the capacitor C3 is grounded; the No. 3 pin of the chip U1 is simultaneously connected with the first end of a resistor R3 in the signal acquisition circuit; the capacitor C4 is connected with the capacitor C3 in parallel; the anode of the light emitting diode D2 is connected with pins 1 and 8 of the chip U1, and the cathode of the light emitting diode D2 is connected with the first end of the resistor R5; the second end of the resistor R5 is connected with the No. 1 pin of the chip U2; the No. 4 pin of the chip U1 is grounded; a No. 5 pin of the chip U1 is connected with a power supply V1; one end of the resistor R6 is connected with a No. 6 pin of the chip U1 and is connected with a No. 2 pin of the chip U2, and the other end of the resistor R6 is grounded; one end of the resistor R4 is connected with the anode of the diode D3, and the other end of the resistor R4 is grounded; the capacitor C5 is connected with the resistor R4 in parallel; one end of the capacitor C6 is connected with the anode of the diode D3, and the other end of the capacitor C6 is connected with the first end of the resistor R7; the second end of the resistor R7 is connected with a No. 4 pin of the chip U2; one end of the resistor R8 is connected with the cathode of the diode D3, and the other end of the resistor R8 is connected with the No. 4 pin of the chip U2; meanwhile, the pin 4 of the chip U2 is connected with the pin 1 of an analog-to-digital conversion chip AD in the data conversion circuit; one end of a capacitor C6 is connected with a No. 3 pin of the chip U2 and is connected with a power supply V2, and the other end of the capacitor C6 is grounded; and the No. 7 pin of the chip U1 is connected with the No. 4 pin of the chip U1 in the communication circuit.

6. The hydrological telemetering device based on the dual-channel network communication according to claim 1 or 2, characterized in that the signal acquisition circuit is provided with a primary filtering circuit for performing primary filtering processing on the sensor data to eliminate noise waves; the secondary filter circuit carries out secondary filter processing on the sensor data to eliminate tip burrs; the first-stage amplifying circuit is used for amplifying the data subjected to the two-time filtering; the secondary amplifying circuit performs secondary amplification processing on the data after primary amplification; the third-stage amplifying circuit is used for carrying out amplification processing on the data after the second amplification for three times; the third filtering circuit further eliminates tip burrs and clutter of the amplified data;

the method specifically comprises the following steps: one end of the resistor R1 is connected with a power supply V1, and the other end of the resistor R1 is connected with the non-inverting input end of the operational amplifier A1; one end of the resistor R2 is connected with the second end of the resistor R1, and the other end of the resistor R2 is grounded; the capacitor C1 is connected with the resistor R2 in parallel; the first end of the resistor R3 is connected with a No. 3 terminal of a chip U1 in the central control circuit; the second end of the resistor R3 is connected with the inverting input end of the operational amplifier A1; one end of the capacitor C3 is connected with the reverse input end of the operational amplifier A1, and the other end of the capacitor C2 is connected with the first end of the resistor R5; the second end of the resistor R5 is connected with the output end of the operational amplifier A1 and is connected with the base electrode of the triode Q1; the resistor R4 is connected with the capacitor C2 in parallel; one end of the capacitor C3 is connected with the second end of the resistor R5, and the second end of the capacitor C3 is grounded; one end of the resistor R6 is connected with the power supply V2, and the other end of the resistor R6 is connected with the emitting electrode of the triode Q1 and the homodromous input end of the operational amplifier A2; one end of the resistor R7 is connected with the collector of the triode Q1, and the other end of the resistor R7 is grounded; the inverting input end of the operational amplifier A2 is grounded; one end of the resistor R8 is connected with the output end of the operational amplifier A2, and the other end of the resistor R8 is connected with the first end of the capacitor C4; the second end of the capacitor C4 is connected with the inverting input end of the operational amplifier A3; one end of the resistor R9 is connected with the reverse input end of the operational amplifier A3, and the other end of the resistor R9 is connected with the output end of the operational amplifier A3; the capacitor C5 is connected with the resistor R9 in parallel; the homodromous input end of the operational amplifier A3 is connected with a power supply V3; the output terminal of the operational amplifier A3 is simultaneously connected to the input terminal IN of the data conversion circuit.

7. The hydrological telemetering device based on dual-channel network communication according to claim 1 or 2, characterized in that the data conversion circuit is provided with an analog-to-digital conversion chip AD, and the type of the used analog-to-digital conversion chip is AD7895; a signal input circuit, a signal arrangement circuit and an AD conversion circuit are arranged around the AD conversion chip; the signal input circuit is used for inputting a control signal; the signal sorting part is used for sorting and calculating the input circuit; the AD conversion circuit is used for converting the electric signal after finishing and calculation into a digital signal;

the method specifically comprises the following steps: the input end IN is connected with the output end of an operational amplifier A3 IN the signal acquisition circuit; one end of the resistor R1 is connected with the input end IN, and the other end of the resistor R1 is connected with the first end of the capacitor C1; one end of the capacitor C2 is connected with the second end of the capacitor C1, and the other end of the capacitor C2 is connected with a No. 2 pin of the analog-to-digital conversion chip AD; the No. 1 pin of the analog-to-digital conversion chip AD is connected with the No. 4 pin of the chip U2 in the central control circuit; one end of the resistor R2 is connected with a No. 3 pin of the analog-to-digital conversion chip AD, and the other end of the resistor R2 is connected with a first end of the capacitor C3; the second end of the capacitor C3 is grounded; one end of the capacitor C4 is connected with the power supply V1 and is connected with a No. 4 pin of the analog-to-digital conversion chip AD, and the other end of the capacitor C4 is grounded; one end of the capacitor C3 is connected with the second end of the capacitor C1, the other end of the capacitor C3 is connected with the first end of the resistor R3, and the second end of the resistor R3 is connected with the No. 7 pin of the analog-to-digital conversion chip AD; one end of the resistor R5 is connected with a No. 7 pin of the analog-to-digital conversion chip AD, and the other end of the resistor R5 is connected with the output end OUT; the output end OUT is connected with pins 15 and 16 of a chip U1 in the communication circuit through a serial port device and is connected with pins 18 and 20 of a chip U2 in the communication circuit; one end of the resistor R4 is connected with a No. 6 pin of the analog-to-digital conversion chip AD, and the other end of the resistor R4 is connected with a No. 7 pin of the analog-to-digital conversion chip AD; one end of the capacitor C5 is connected with a No. 5 pin of the analog-to-digital conversion chip AD, and the other end of the capacitor C5 is grounded; and the No. 8 pin of the analog-to-digital conversion chip AD is connected with a power supply V2.

8. The hydrological telemetering device based on the dual-channel network communication according to claim 1 or 2, wherein the communication circuit is provided with a chip U1 and a chip U2, the model of the chip U1 is M5313, and the model of the chip U2 is FB3511; an internet of things communication circuit, an internet of things communication power supply circuit, a signal selection circuit, a power amplifier power supply circuit, a Beidou communication power supply circuit and a Beidou communication circuit are arranged around the chip U1 and the chip U2, and the internet of things communication circuit is used for sending and receiving data in an internet of things mode; the Internet of things communication power supply circuit is used for supplying power to the Internet of things circuit; the signal selection circuit is used for selecting a channel with a stronger signal in the Internet of things or Beidou communication to carry out communication work according to the strength of the signal; the power amplifier power supply circuit is used for supplying power to the power amplifier board; the Beidou communication power supply circuit is used for supplying power to the Beidou communication circuit; the Beidou communication circuit is used for sending and receiving data in a Beidou communication mode;

the method specifically comprises the following steps: one end of the resistor R1 is connected with a power supply V1, and the other end of the resistor R1 is connected with a No. 12 pin of the chip U1; one end of the resistor R2 is connected with the power supply V1, and the other end of the resistor R2 is connected with a No. 11 pin of the chip U1; one end of the capacitor C1 is connected with a power supply V1, and the other end of the capacitor C1 is grounded; one end of the resistor R3 is connected with a No. 10 pin of the chip U1, and the other end of the resistor R3 is grounded; the No. 9 pin of the chip U1 is grounded; one end of the resistor R4 is connected with the power supply V2, and the other end of the resistor R4 is connected with a No. 8 pin of the chip U1; one end of the capacitor C3 is connected with the second end of the resistor R4, and the other end of the capacitor C3 is connected with the No. 1 pin of the chip U2; one end of the capacitor C4 is connected with the second end of the resistor R4, and the other end of the capacitor C4 is connected with the No. 2 pin of the chip U2; one end of the capacitor C5 is connected with the second end of the resistor R4, and the other end of the capacitor C5 is connected with the No. 1 pin of the chip U2; one end of a capacitor C6 is connected with the second end of the resistor R4, and the other end of the capacitor C6 is connected with a No. 4 pin of the chip U2; one end of the capacitor C7 is connected with the second end of the resistor R4, and the other end of the capacitor C7 is connected with the No. 5 pin of the chip U2; one end of the resistor R5 is connected with the No. 1 pin of the chip U1, and the other end of the resistor R5 is connected with the second end of the resistor R4; one end of the resistor R6 is connected with the No. 3 pin of the chip U1, and the other end of the resistor R6 is connected with the second end of the resistor R4; one end of the capacitor C2 is connected with the second end of the resistor R4, and the other end of the capacitor C2 is grounded; one end of the resistor R7 is connected with a No. 8 pin of the chip U1, and the other end of the resistor R7 is connected with a power supply V3; one end of the capacitor C8 is connected with a power supply V4, and the other end of the capacitor C8 is connected with pins 6, 7, 8 and 9 of the chip U2; one end of the resistor R8 is connected with pins 10, 11, 12 and 13 of the chip U2, and the other end of the resistor R8 is grounded; one end of a resistor R9 is connected with a power supply V5 and is connected with a No. 14 pin of the chip U2, and the other end of the resistor R9 is connected with the anode of the light-emitting diode D1; the cathode of the light emitting diode D1 is connected with a No. 15 pin of the chip U2; pins 16, 21 and 22 of the chip U2 are grounded; pins 15 and 16 of the chip U1 are connected with an OUT end in the data conversion circuit through a serial device; the No. 2 pin of the chip U1 is suspended; the No. 4 pin of the chip U1 is connected with the No. 7 pin of the U1 in the central control circuit; pins 5, 6 and 7 of the chip U1 are an Internet of things SIM interface and are connected with an Internet of things SIM card through an SIM card slot; pins 17 and 19 of the chip U2 are a GPS/RNSS serial port communication interface and are connected with a GPS positioning module; pins 18 and 20 of the chip U2 are RDSS serial port communication interfaces and are connected with an OUT end in the data conversion circuit through a serial port device; no. 23, 24 and 25 pins of the chip U2 are Beidou SIM interfaces and are connected with a Beidou SIM card through an SIM card slot.

9. A hydrological telemetering data transmission method based on dual-channel network communication is characterized by being realized by the hydrological telemetering device based on dual-channel network communication according to any one of claims 1 to 8, and comprising the following specific operation steps of:

step six: searching communication signals, and comparing the strength of the signals of the Internet of things and the Beidou channels;

Step nine: the telemetry device automatically shuts down.