CN215416418U - Digital fishery internet of things multi-parameter water quality on-line monitoring and equipment automatic control system - Google Patents
Digital fishery internet of things multi-parameter water quality on-line monitoring and equipment automatic control system Download PDFInfo
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- CN215416418U CN215416418U CN202120486564.6U CN202120486564U CN215416418U CN 215416418 U CN215416418 U CN 215416418U CN 202120486564 U CN202120486564 U CN 202120486564U CN 215416418 U CN215416418 U CN 215416418U
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Abstract
The utility model discloses a digital fishery internet of things multi-parameter water quality online monitoring and equipment automatic control system which comprises a power supply module, a monitoring control unit and a remote terminal, wherein the power supply module is electrically connected with the monitoring control unit, the monitoring control unit is in communication connection with the remote terminal, the monitoring control unit comprises a multi-parameter monitoring sensing module, a main control module, a remote communication module, a display module, an equipment control module and an alarm module, the multi-parameter monitoring sensing module, the display module, the equipment control module and the alarm module are all electrically connected with the main control module, and the main control module is in communication connection with the remote terminal through the remote communication module, so that hardware support is provided for online water quality monitoring and automatic control.
Description
Technical Field
The utility model belongs to the technical field of aquatic products, and particularly relates to a digital fishery internet of things multi-parameter water quality online monitoring and equipment automatic control system.
Background
With the rapid development of the aquaculture industry, the research on the key technology for predicting the aquaculture water quality is enhanced, the disaster prevention capability of the aquaculture is improved, and the guarantee of the safe production of the aquaculture becomes one of the key contents of the fishery production. In the breed aquatics pond, the quality and quality of pond water quality parameter directly determine the output and the quality of aquatic products, and quality of water worsens and can produce adverse effect to the living environment of fish, only adopts the survey that single dissolved oxygen parameter goes on among the prior art, leads to quality of water parameter data acquisition incomplete, can't be better guide aquaculture, also lack a equipment that can carry out effective monitoring to the dissolved oxygen in the pond under adverse circumstances moreover.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a digital fishery internet of things multi-parameter water quality online monitoring and equipment automatic control system.
The specific scheme is as follows:
digital fishery thing networking multi-parameter quality of water on-line monitoring and equipment automatic control system, including power module, monitor control unit and remote terminal, power module with monitor control unit electricity is connected, monitor control unit with remote terminal and communication connection, wherein, monitor control unit includes multi-parameter monitoring sensing module, host system, remote communication module, display module, equipment control module and alarm module, multi-parameter monitoring sensing module, display module, equipment control module and alarm module all with the host system electricity is connected, host system passes through remote communication module and remote terminal communication connection.
The multi-parameter monitoring sensing module comprises at least one dissolved oxygen sensor, at least one digital ORP sensor, at least one digital turbidity sensor, at least one digital COD sensor, at least one digital ammonia ion sensor, at least one air pressure temperature sensor and a 485 communication module, wherein the dissolved oxygen sensor, the digital ORP sensor, the digital turbidity sensor, the digital COD sensor and the digital ammonia ion sensor are all electrically connected with the main control module through the 485 communication module, and the air pressure temperature sensor is electrically connected with the main control module through an IIC communication protocol.
The 485 communication module comprises a conversion chip U1, a receiving photoelectric coupler N1, a sending photoelectric coupler N2 and a 485 lightning protection circuit, the 485 lightning protection circuit comprises a ceramic discharge tube GDT1, a fuse and a TVS diode, the ceramic discharge tube GDT1, the fuse and the TVS diode are electrically connected with a 485 conversion chip U1, the 485 conversion chip U1 is electrically connected with the main control module through the receiving photoelectric coupler N1 and the sending photoelectric coupler N2 respectively, and the 485 conversion chip U1, the receiving photoelectric coupler N1, the sending photoelectric coupler N2 and the 485 lightning protection circuit are electrically connected with a power module.
The master control module comprises an MCU, a reset circuit, a working clock circuit, a real-time clock circuit, a working indicator lamp circuit, a remote communication indicator lamp circuit, a filter circuit and a communication interface, wherein the communication interface, the reset circuit, the working clock circuit, the real-time clock circuit and the remote communication indicator lamp circuit are all electrically connected with the MCU, and the working indicator lamp circuit and the filter circuit are all electrically connected with the power module.
The device control module comprises at least one control unit, the control unit comprises an isolation photoelectric coupler, a control triode, a protection diode, a relay, a device access port and a device work indicating lamp, wherein the isolation photoelectric coupler is electrically connected with the MCU, the photoelectric coupler is electrically connected with the relay through the control triode, the two ends of a coil of the relay are connected with the protection diode in parallel, and a normally open contact of the relay is electrically connected with the device access port and the device work indicating lamp respectively.
The alarm module comprises an alarm control triode Q1, a buzzer LS1 and an alarm protection diode D3, the MCU is electrically connected with the buzzer LS1 through the alarm control triode Q1, the buzzer LS1 is electrically connected with the power module, and the alarm protection diode D3 is connected with the buzzer LS in parallel.
The remote communication module is a 4G communication module, and the display module is a serial port display screen.
The power module comprises an AC-DC conversion module, a first isolation voltage unit, a DC voltage reduction unit and a second isolation voltage unit, wherein the first isolation voltage unit, the DC voltage reduction unit and the second isolation voltage unit are electrically connected with the AC-DC conversion module, the AC-DC conversion module comprises a lightning protection unit and an AC-DC converter, and the AC-DC converter is electrically connected with the lightning protection unit.
The lightning protection unit comprises a thermistor, a second ceramic discharge tube GDT, a ground terminal and an alternating current input interface, wherein the alternating current input interface is electrically connected with the second ceramic discharge tube GDT through the thermistor, the second ceramic discharge tube GDT is electrically connected with the ground terminal, and the alternating current input interface is also electrically connected with the AC-DC converter.
The first isolation voltage unit is 12V to 12V isolation voltage, the DC voltage reduction unit comprises a DC12 to 5V voltage reduction unit and a DC5V to DC3V voltage reduction unit, and the second isolation voltage unit is 12V to 5V isolation voltage.
The utility model discloses a multi-parameter online water quality monitoring and automatic equipment control system of a digital fishery internet of things, which adopts a multi-parameter monitoring sensing module to monitor dissolved oxygen DO, pH value, water temperature, oxidation-reduction potential ORP, chemical oxygen demand COD, ammonia nitrogen NH3, suspended matters in water, air temperature and air pressure, can display monitoring data on a display module through a main control module and also can send the monitoring data to a remote control end through a remote communication module, the main control module can drive an alarm module to alarm and remind when monitoring that the dissolved oxygen in a pond is insufficient or a certain parameter is lower than an early warning value, and simultaneously starts an aerator to aerate through an equipment control module, the multi-parameter monitoring sensor module adopts a 485 communication mode to carry out data transmission with the main control module, has the advantage of strong anti-interference, and the power module and the 485 communication module are both provided with lightning protection units, the service life of the device is prolonged, and the utility model provides hardware support for water quality on-line monitoring and automatic control.
Drawings
Fig. 1 is a schematic view of the general structure of the present invention.
FIG. 2 is a circuit block diagram of a multi-parameter monitoring sensing module.
Fig. 3 is a circuit configuration diagram of the main control module.
Fig. 4 is an original diagram of a circuit of the control unit.
Fig. 5 is a schematic circuit diagram of the device control module.
Fig. 6 is a schematic diagram of the circuit configuration of the alarm module.
Fig. 7 is a schematic diagram of a circuit interface of a telecommunications module.
Fig. 8 is a schematic circuit configuration diagram of the AC-DC conversion module.
Fig. 9 is a schematic circuit diagram of the first isolation voltage unit.
Fig. 10 is a schematic circuit configuration diagram of the DC voltage-reducing unit.
Fig. 11 is a schematic circuit diagram of the second isolation voltage unit.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It is obvious that the described embodiments are only a part of the implementations of the present invention, and not all implementations, and all other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without any inventive work are within the scope of the present invention.
As shown in fig. 1, the online monitoring and automatic control system for the multi-parameter water quality of the internet of things in the digital fishery comprises a power module 8, a monitoring control unit 2 and a remote terminal 1, wherein the power module 8 is electrically connected with the monitoring control unit 2, the monitoring control unit 2 is electrically connected with the remote terminal 1, the monitoring control unit 2 comprises a multi-parameter monitoring sensing module 9, a main control module 7, a remote communication module 3, a display module 4, an equipment control module 5 and an alarm module 6, the multi-parameter monitoring sensing module 9, the display module 4, the equipment control module 5 and the alarm module 6 are electrically connected with the main control module 7, and the main control module 7 is in communication connection with the remote terminal 1 through the remote communication module 3. In the present embodiment, the remote terminal 1 is a mobile terminal or a PC terminal, preferably a mobile terminal, and the mobile terminal has the technical effect of being portable and easy to operate.
The multi-parameter monitoring sensing module 9 in the monitoring control unit 2 can monitor dissolved oxygen DO, PH, water temperature, oxidation-reduction potential ORP, chemical oxygen demand COD, ammonia nitrogen NH3, suspended matters in water, air temperature and air pressure, finally, the multi-parameter monitoring sensing module 9 transmits the monitored multiple parameters to the main control module 7, the main control module 7 respectively transmits each parameter value to the display module 4 and the remote terminal 1, in addition, a preset value is stored in the main control module 7, if any value in the multiple parameters is smaller than or larger than the stored preset value, the main control module 7 drives the alarm module 6 to alarm and remind, at this moment, manual intervention is needed to improve water quality, and simultaneously, the equipment control module 5 is preferably electrically connected with the aerator, and the equipment control module 5 can control the aerator to be started or stopped, so as to keep the content value of the dissolved oxygen in the pond at a normal condition and ensure the good growth of the fishes in the pond.
As shown in fig. 2, the multi-parameter monitoring sensing module 9 includes at least one dissolved oxygen sensor 10, at least one digital ORP sensor 41, at least one digital turbidity sensor 42, at least one digital COD sensor 43, at least one digital ammonia ion sensor 44, at least one barometric pressure temperature sensor 12 and a 485 communication module 11, wherein the dissolved oxygen sensor 10, the digital ORP sensor 41, the digital turbidity sensor 42, the digital COD sensor 43 and the digital ammonia ion sensor 44 are all electrically connected to the main control module 7 through the 485 communication module 11, and the barometric pressure temperature sensor 12 is electrically connected to the main control module 7 through an IIC communication protocol.
In this embodiment, the model of the 10-bit digital dissolved oxygen sensor is preferably HN-011 ISDT10-L05, preferably, the number of the sent dissolved oxygen sensors 10 is four, the four dissolved oxygen sensors 10 are placed in different areas of the pond, the dissolved oxygen sensors in different areas of the pond are all electrically connected with the 485 communication module 11, and the master control module 7 can sequentially acquire the content of dissolved oxygen in different areas of the pond through the 485 communication module, so that the balance of the content of dissolved oxygen in the pond is improved. The dissolved oxygen sensor of HN-011 ISDT10-L05 can detect the dissolved oxygen content, PH and water temperature parameters in the pond.
The model of the air pressure temperature sensor 12 is preferably a BMP280, the BMP280 has dual functions of temperature detection and atmospheric pressure detection, and has the advantages of low power consumption, monitoring resolution and high sampling frequency, the BMP280 has an SPI communication interface and an IIC communication interface, and in this embodiment, the preferred IIC communication interface has the technical effect of simple and convenient wiring.
The digital ORP sensor 41 is preferably of the type ISRP 10-L05; the digital turbidity sensor 42 is preferably of the type HN-Z6 ISST 10-L05.
The 485 communication module 11 comprises a 485 conversion chip U1, a receiving photoelectric coupler N1, a sending photoelectric coupler N2 and a 485 lightning protection circuit 13, the 485 lightning protection circuit 13 comprises a ceramic discharge tube GDT1, a fuse 14 and a TVS diode 15, the ceramic discharge tube GDT1, the fuse 14 and the TVS diode 15 are all electrically connected with the 485 conversion chip U1, the 485 conversion chip U1 is electrically connected with the main control module 7 through the receiving photoelectric coupler N1 and the sending photoelectric coupler N2, and the 485 conversion chip U1, the receiving photoelectric coupler N1, the sending photoelectric coupler N2 and the 485 lightning protection circuit 13 are all electrically connected with the power supply module 8.
In this embodiment, the model of the 485 conversion chip U1 is preferably MAX13487E, and the model of the receiving photocoupler N1 and the model of the transmitting photocoupler N2 are both 6N 137.
The 485 conversion chip U1 is provided with a receiving end RO, a driving end DI, a receiving enabling end RE, a driving enabling DE, an in-phase output input end A and an inverted output input end B, wherein the in-phase output input end A and the inverted output input end B are electrically connected with the plurality of digital dissolved oxygen sensors 10, in the embodiment, the receiving enabling end RE and the driving enabling DE are both electrically connected with a high level, so that the driving end DI can send inquiry commands to different dissolved oxygen sensors 10, then the dissolved oxygen sensors 10 receiving the commands transmit dissolved oxygen data to the main control module 7 through the receiving end RO, and the receiving photoelectric coupler N1 and the transmitting photoelectric coupler N2 carry out isolated transmission on signals, thereby effectively preventing signal interference and ensuring the stability of data transmission. In addition, the ceramic discharge tube GDT1, the fuse 14 and the TVS diode 15 can effectively protect the 485 conversion chip U1, and the stability and the service life of the whole system are further improved.
As shown in fig. 3, the main control module 7 includes an MCU16, a reset circuit 21, an operating clock circuit 22, a real-time clock circuit 23, an operating indicator lamp circuit 19, a remote communication indicator lamp circuit 20, a filter circuit 18, and a communication interface 17, where the communication interface 17, the reset circuit 21, the operating clock circuit 22, the real-time clock circuit 23, and the remote communication indicator lamp circuit 20 are all electrically connected to an MCU16, and the operating indicator lamp circuit 19 and the filter circuit 18 are all electrically connected to the power module 8.
Preferably, the MCU16 is model STM32F103C8T6, and the reset circuit 21 can restore the system to the initial state, when a problem occurs during the operation of the system, the MCU16 can be reset to an initial operating state by the reset circuit 21, which improves the fault tolerance of the overall system, the operational clock circuit 22 provides a clock signal for normal operation of the MCU16, the real time clock circuit 23 provides an accurate clock signal to the system, the operation light circuit 19 is used to indicate whether the MCU16 is powered on, if the light in the operation light circuit 19 is on, the MCU16 is in power on state, the remote communication indicator light circuit 20 is used to indicate the communication status of the MCU16 and the remote terminal 1, the filter circuit 18 filters out noise waves in different frequency bands in the circuit to provide stable working voltage for the MCU 16.
As shown in fig. 4 to 5, the device control module 5 includes at least one control unit, the control unit includes an isolation photocoupler 24, a control triode 25, a protection diode 26, a relay 27, a device access port 29 and a device operation indicator light 28, wherein the isolation photocoupler 24 is electrically connected to the MCU16, the photocoupler is electrically connected to the relay 27 through the control triode 25, the protection diode 26 is connected in parallel to two ends of a coil of the relay 27, and a normally open contact of the relay 27 is electrically connected to the device access port 29 and the device operation indicator light 28, respectively.
Keep apart optoelectronic coupler 24 and receive behind the signal that MCU16 sent, can be so that control triode 25 is in the conducting state, control triode 25 switches on the back, coil in relay 27 gets electric, thereby make relay 27 action, relay 27 action back, normally open contact in relay 27 becomes the conducting state by the off-state before the action, relay 27's normally open contact switches on the back, equipment access port 29 has obtained 220V's operating voltage, in this embodiment, what connect in the equipment access port 29 is the oxygen-increasing machine, relay 27 action back like this, the oxygen-increasing machine gets electric and begins work, work pilot lamp 28 also gets electric and is lighted simultaneously.
As shown in fig. 6, the alarm module 6 includes an alarm control transistor Q1, a buzzer LS1 and an alarm protection diode D3, the MCU16 is electrically connected to the buzzer LS1 through the alarm control transistor Q1, the buzzer LS1 is electrically connected to the power module 8, and the alarm protection diode D3 is connected to the buzzer LS1 in parallel. In this embodiment, the MCU16 may drive the alarm control transistor Q1 to be turned on, and after the alarm control transistor Q1 is turned on, the buzzer LS1 is powered on to perform alarm prompt.
As shown in fig. 7, the remote communication module 3 is a 4G communication module, the 4G communication module has the advantages of large bandwidth, high communication speed, and stability and no disconnection, and the display module 4 is a serial display screen.
As shown in fig. 8 to 11, the power module 8 includes an AC-DC conversion module 30, a first isolation voltage unit 36, a DC voltage reduction unit 37, and a second isolation voltage unit 40, wherein the first isolation voltage unit 36, the DC voltage reduction unit 37, and the second isolation voltage unit 40 are all electrically connected to the AC-DC conversion module 30, the AC-DC conversion module 30 includes a lightning protection unit 31 and an AC-DC converter 32, and the AC-DC converter 32 is electrically connected to the lightning protection unit 31.
The lightning protection unit 31 includes a thermistor 33, a second ceramic discharge tube GDT, a ground terminal 34, and an AC input interface 35, wherein the AC input interface 35 is electrically connected to the second ceramic discharge tube GDT through the thermistor 33, the second ceramic discharge tube GDT is electrically connected to the ground terminal 34, and the AC input interface 35 is further electrically connected to the AC-DC converter 32. The AC-DC converter 32 is preferably of the type HDR-60-12.
The first isolation voltage unit 36 is a 12V to 12V isolation voltage, the DC step-down unit 37 includes a DC12 to 5V step-down unit 38 and a DC5V to DC3V step-down unit 39, and the second isolation voltage unit 40 is a 12V to 5V isolation voltage. The power chip in the first isolation voltage unit 36 is preferably RB1212MD, the power chip in the second isolation voltage unit 40 is preferably 1205S, and the first isolation voltage unit 36 and the second isolation voltage unit 40 provide stable and interference-free operating voltage for the 485 communication module 11.
The utility model discloses a multi-parameter online water quality monitoring and automatic equipment control system of a digital fishery internet of things, which adopts a multi-parameter monitoring sensing module to monitor Dissolved Oxygen (DO), pH value (PH), water temperature, oxidation-reduction potential (ORP), Chemical Oxygen Demand (COD), ammonia nitrogen (NH 3), suspended matters in water, air temperature and air pressure, can display monitoring data on a display module through a main control module and can also send the monitoring data to a remote control end through a remote communication module, when the main control module monitors that the dissolved oxygen in a pond is insufficient or a certain parameter is lower than an early warning value, the main control module can drive an alarm module to alarm and remind so as to provide hardware support for regulating and controlling water quality, and simultaneously starts an aerator to aerate through an equipment control module, the multi-parameter monitoring sensing module adopts a data transmission mode with the main control module to have the advantage of strong anti-interference performance, the power module and the 485 communication module are respectively provided with a lightning protection unit, so that the service life of the equipment is prolonged, and the utility model provides hardware support for online monitoring and automatic control of water quality.
It is known to those skilled in the art to set preset values in an MCU and compare the preset values with parameter values of sensors, and the MCU includes several parts, such as an arithmetic logic unit, an accumulator, and a register. The arithmetic logic unit is used for carrying out arithmetic or logic operation on the transmitted data, and can complete the operations of adding, subtracting, and/or comparing the two data, and finally storing the result in the accumulator.
The technical means disclosed in the utility model scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.
Claims (10)
1. Digital fishery thing networking multi-parameter quality of water on-line monitoring and equipment automatic control system, its characterized in that: including power module (8), monitoring control unit (2) and remote terminal (1), power module (8) with monitoring control unit (2) electricity is connected, monitoring control unit (2) with remote terminal (1) communication connection, wherein, monitoring control unit (2) including multi-parameter monitoring sensing module (9), host system (7), remote communication module (3), display module (4), equipment control module (5) and alarm module (6), multi-parameter monitoring sensing module (9), display module (4), equipment control module (5) and alarm module (6) all with host system (7) electricity is connected, host system (7) are through remote communication module (3) and remote terminal (1) communication connection.
2. The digital fishery internet of things multi-parameter water quality online monitoring and equipment automatic control system according to claim 1, characterized in that: the multi-parameter monitoring sensing module (9) comprises at least one dissolved oxygen sensor (10), at least one digital ORP sensor (41), at least one digital turbidity sensor (42), at least one digital COD sensor (43), at least one digital ammonia ion sensor (44), at least one atmospheric pressure temperature sensor (12) and a 485 communication module (11), wherein the dissolved oxygen sensor (10), the digital ORP sensor (41), the digital turbidity sensor (42), the digital COD sensor (43) and the digital ammonia ion sensor (44) are electrically connected with the main control module (7) through the 485 communication module (11), and the atmospheric pressure temperature sensor (12) is electrically connected with the main control module (7) through an IIC communication protocol.
3. The digital fishery internet of things multi-parameter water quality online monitoring and equipment automatic control system according to claim 2, characterized in that: the 485 communication module (11) comprises a 485 conversion chip (U1), a receiving photoelectric coupler (N1), a sending photoelectric coupler (N2) and a 485 lightning protection circuit (13), wherein the 485 lightning protection circuit (13) comprises a ceramic discharge tube (GDT 1), a fuse (14) and a TVS diode (15), the ceramic discharge tube (GDT 1), the fuse (14) and the TVS diode (15) are electrically connected with the 485 conversion chip (U1), the 485 conversion chip (U1) is electrically connected with the main control module (7) through the receiving photoelectric coupler (N1) and the sending photoelectric coupler (N2), and the 485 conversion chip (U1), the receiving photoelectric coupler (N1), the sending photoelectric coupler (N2) and the 485 lightning protection circuit (13) are electrically connected with the power module (8).
4. The digital fishery internet of things multi-parameter water quality online monitoring and equipment automatic control system according to claim 1, characterized in that: master control module (7) include MCU (16), reset circuit (21), work clock circuit (22), real-time clock circuit (23), work pilot lamp circuit (19), remote communication pilot lamp circuit (20), filter circuit (18) and communication interface (17), reset circuit (21), work clock circuit (22), real-time clock circuit (23) and remote communication pilot lamp circuit (20) all are connected with MCU (16) electricity, work pilot lamp circuit (19) and filter circuit (18) all are connected with power module (8) electricity.
5. The digital fishery internet of things multi-parameter water quality on-line monitoring and equipment automatic control system according to claim 4, characterized in that: equipment control module (5) includes at least one the control unit, the control unit is including keeping apart optoelectronic coupler (24), control triode (25), protection diode (26), relay (27), equipment access port (29) and equipment work pilot lamp (28), wherein, keep apart optoelectronic coupler (24) with MCU (16) electricity is connected, optoelectronic coupler through control triode (25) with relay (27) electricity is connected, and the coil both ends of relay (27) are parallelly connected to have protection diode (26), and the normally open contact of relay (27) is connected with equipment access port (29) and equipment work pilot lamp (28) electricity respectively.
6. The digital fishery internet of things multi-parameter water quality on-line monitoring and equipment automatic control system according to claim 4, characterized in that: alarm module (6) are including alarm control triode (Q1), bee calling organ (LS 1) and warning protection diode (D3), MCU (16) through alarm control triode (Q1) with bee calling organ (LS 1) electricity is connected, bee calling organ (LS 1) with power module (8) electricity is connected, warning protection diode (D3) with bee calling organ (LS 1) parallel connection.
7. The digital fishery internet of things multi-parameter water quality online monitoring and equipment automatic control system according to claim 1, characterized in that: the remote communication module (3) is a 4G communication module, and the display module (4) is a serial port display screen.
8. The digital fishery internet of things multi-parameter water quality online monitoring and equipment automatic control system according to claim 1, characterized in that: the power supply module (8) comprises an AC-DC conversion module (30), a first isolation voltage unit (36), a DC voltage reduction unit (37) and a second isolation voltage unit (40), wherein the first isolation voltage unit (36), the DC voltage reduction unit (37) and the second isolation voltage unit (40) are electrically connected with the AC-DC conversion module (30), the AC-DC conversion module (30) comprises a lightning protection unit (31) and an AC-DC converter (32), and the AC-DC converter (32) is electrically connected with the lightning protection unit (31).
9. The digital fishery internet of things multi-parameter water quality on-line monitoring and equipment automatic control system according to claim 8, characterized in that: the lightning protection unit (31) comprises a thermistor (33), a second ceramic discharge tube (GDT), a ground terminal (34) and an AC input interface (35), wherein the AC input interface (35) is electrically connected with the second ceramic discharge tube (GDT) through the thermistor (33), the second ceramic discharge tube (GDT) is electrically connected with the ground terminal (34), and the AC input interface (35) is also electrically connected with the AC-DC converter (32).
10. The digital fishery internet of things multi-parameter water quality on-line monitoring and equipment automatic control system according to claim 8, characterized in that: the first isolation voltage unit (36) is a 12V to 12V isolation voltage, the DC buck unit (37) includes a DC12 to 5V buck unit (38) and a DC5V to DC3V buck unit (39), and the second isolation voltage unit (40) is a 12V to 5V isolation voltage.
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