Novel gateway interface circuit

Abstract

The novel gateway interface circuit provided by the utility model supports SDI-12 interface communication, and can be externally connected with a corresponding sensor through the interface, thereby meeting the actual requirements of miniaturization and simplification of customers. The system comprises a main processor module, the main processor module is respectively connected with an RS-232 module, an OUT daughter board module and an IN daughter board module, the system further comprises a slave processor module connected with the main processor module, the slave processor module is connected with a four-way SDI-12 communication module, the input end of the four-way SDI-12 communication module is connected with an SDI-12 sensor, the output end of the four-way SDI-12 communication module is connected with an external server, and the external server is connected with the external server. The system also comprises a four-way SDI-12 power supply module, and the four-way SDI-12 power supply module is connected with the four-way SDI-12 communication module and four external sensors, supplies power to the four sensors, and controls the on-off of the corresponding sensors through switches.

Description

Technical Field

[0001] The utility model relates to the technical field of gateway interface circuit devices, and specifically relates to a novel gateway interface circuit. Background Art

[0002] SDI-12 is a protocol commonly used in environmental monitoring and is favored for its low-power operation. Currently, SDI-12 products are becoming increasingly rich and widely used. SDI-12 bus interfaces have also been added to data collectors and sensors. The data acquisition system constructed through SDI-12 has a simple structure. By adopting bus technology, all sensors are connected to an SDI-12 bus, reducing the complex wiring in the traditional way and making it clear at a glance for users. Chinese Utility Model Patent Application No. 2023235691122 discloses a general gateway interface circuit device. Since it lacks SDI-12 as a communication interface, in the actual use process, when an SDI-12 interface is required, it needs to be achieved by adding an additional SDI-12 communication interface module. This not only increases the product cost but also easily leads to a complex circuit structure and a larger volume, unable to meet the actual needs of customers for miniaturization and simplicity. Content of the Utility Model

[0003] Aiming at the problem that the existing gateway interface circuit does not support SDI-12 interface communication, which requires an additional SDI-12 communication interface module during actual use, resulting in a complex circuit structure and a larger volume and unable to meet the miniaturization and simplicity requirements of customers, the utility model provides a novel gateway interface circuit that supports SDI-12 interface communication. Through this interface, corresponding sensors can be externally connected to meet the actual needs of customers for miniaturization and simplicity.

[0004] Its technical solution is as follows: A new type of gateway interface circuit, which includes a main processor module. The main processor module is respectively connected to an RS-232 module, an OUT daughter board module, and an IN daughter board module. The OUT daughter board module is connected to an external server, and the IN daughter board module is connected to a sensor to collect information. The main processor module includes an AT1284 single-chip microcomputer IC2. The AT1284 single-chip microcomputer IC2 is connected to a clock, a crystal oscillator, a program burning port J4, an SD card storage interface chip J5, a temperature acquisition chip IC3, and a serial port debugging chip J3. It is characterized in that: It further includes a slave processor module connected to the main processor module. The slave processor module includes an At128 single-chip microcomputer IC14. The At128 single-chip microcomputer IC14 is connected to a clock IC13, a crystal oscillator X1, and a storage chip IC12. The slave processor module is connected to a 4-channel SDI-12 communication module. The input end of the 4-channel SDI-12 communication module is connected to an SDI-12 sensor, and the output end of the 4-channel SDI-12 communication module is connected to an external server. It further includes a 4-channel SDI-12 power supply module. The 4-channel SDI-12 power supply module is connected to the 4-channel SDI-12 communication module and four external sensors, and it supplies power to the four sensors and controls the on / off of the corresponding sensors through switches respectively.

[0005] It is further characterized in that: the 4-channel SDI-12 communication module includes two SDI-12 communication units with the same structure. One of the SDI-12 communication units includes a chip IC10. Pin 1 of the chip IC10 is connected to one end of a capacitor C39 and a 5V voltage source, and the other end of the capacitor C39 is grounded. Pin 2 of the chip IC10 is connected to one end of a resistor R41, and the other end of the resistor R41 is connected to the negative electrode of a diode D8, one end of a resistor R44, one end of a capacitor C40, and one end of a resistor R42. The other end of the resistor R42 is connected to the output end of an external sensor, one end of a bidirectional diode D7, and the 4-channel SDI-12 power supply module. The positive electrode of the diode D8, the other end of the resistor R44, the other end of the capacitor C40, and the other end of the bidirectional diode D7 are connected together and then grounded. Pin 3 of the chip IC10 is connected to one end of a resistor R35, and the other end of the resistor R35 is connected to the negative electrode of a diode D5, one end of a resistor R37, one end of a capacitor C37, and one end of a resistor R36. The other end of the resistor R36 is connected to the output end of another external sensor, one end of a bidirectional diode D4, and the 4-channel SDI-12 power supply module. The positive electrode of the diode D5, the other end of the resistor R37, the other end of the capacitor C37, and the other end of the bidirectional diode D4 are connected together and then grounded. Pin 4 of the chip IC10 is connected to a 3V2 voltage source through a resistor R40. Pin 5 of the chip IC10 is grounded. Pins 6 and 7 of the chip IC10 are respectively connected to pins 40 and 41 of the At128 single-chip microcomputer IC14. Pin 8 of the chip IC10 is connected to one end of a capacitor C38 and a 3V2 voltage source, and the other end of the capacitor C38 is grounded;

[0006] The 4-channel SDI-12 power supply module includes a voltage regulator IC7. Pin 1 and pin 3 of the voltage regulator IC7 are respectively connected to one end of an inductor L1 and an inductor L2. The other end of the inductor L1 is connected to the other end of the inductor L2, one end of a resistor R11, pin 5 of the voltage regulator IC7, one end of a capacitor C27, one end of a capacitor C28, and a VCC-MAIN voltage source. The other end of the resistor R11 is connected to pin 11 of the voltage regulator IC7. Pins 2, 4, and 12 of the voltage regulator IC7 are all grounded. Pin 6 of the voltage regulator IC7 is connected to one end of a resistor R20 and pin 51 of the At128 single-chip microcomputer IC14. Pin 7 and pin 8 of the voltage regulator IC7 are respectively connected to one end of a capacitor C31 and a resistor R27. The other end of the capacitor C27 is connected to the other end of the capacitor C28, the other end of the resistor R20, the other end of the capacitor C31, the other end of the resistor R27, pin 17 of the voltage regulator IC7, and is grounded. Pin 9 of the voltage regulator IC7 is connected to one end of a capacitor C30 and one end of a capacitor C29. The other end of the capacitor C30 is connected to one end of a resistor R32. Pin 10 of the voltage regulator IC7 is connected to one end of a capacitor C26, one end of a resistor R15, and one end of a resistor R28. Pins 13 and 15 of the voltage regulator IC7 are connected together and then connected to one end of a capacitor C21, one end of a resistor R14, one end of a resistor R15, one end of a capacitor C22, one end of a capacitor C23, one end of a capacitor C25, pins 1 to 3 of a switch Q1, one end of a resistor R9, pins 1 to 3 of a switch Q3, one end of a resistor R12, pins 1 to 3 of a switch Q10, one end of a resistor R54, pins 1 to 3 of a switch Q14, one end of a resistor R65, and an output voltage terminal DC12V1. The other end of the resistor R14 is connected to the other end of the capacitor C26. The other end of the resistor R32 is connected to the other end of the capacitor C29, the other end of the resistor R28, the other end of the capacitor C22, the other end of the capacitor C23, the other end of the capacitor C25, and is grounded. The other end of the capacitor C21 is connected to pin 16 of the voltage regulator IC7. Pin 4 of the switch Q1 is connected to the other end of the resistor R9 and the collector of a triode Q2. The base of the triode Q2 is connected to one end of a resistor R10 and one end of a capacitor C20. The other end of the capacitor C20 is connected to the emitter of the triode Q2 and then grounded. The other end of the resistor R10 is connected to pin 29 of the At128 single-chip microcomputer IC14. Pins 5 to 8 of the switch Q1 are connected together and then connected to one end of a fuse F1. The other end of the fuse F1 is connected to pin 5 of a CH1 channel interface. Pin 2 of the CH1 channel interface is connected to the 4-channel SDI-12 communication module. Pin 4 of the switch Q3 is connected to the other end of the resistor R12 and the collector of a triode Q5. The base of the triode Q5 is connected to one end of a resistor R18 and one end of a capacitor C34. The other end of the capacitor C34 is connected to the emitter of the triode Q5 and then grounded. The other end of the resistor R18 is connected to pin 30 of the At128 single-chip microcomputer IC14. Pins 5 to 8 of the switch Q3 are connected together and then connected to one end of a fuse F3,The other end of the fuse F3 is connected to pin 5 of the CH2 channel interface. Pin 2 of the CH2 channel interface is connected to the 4-channel SDI-12 communication module. Pin 4 of the switch Q10 is connected to the other end of the resistor R54 and the collector of the triode Q11. The base of the triode Q11 is connected to one end of the resistor R57 and one end of the capacitor C49. The other end of the capacitor C49 is connected to the emitter of the triode Q11 and then grounded. The other end of the resistor R57 is connected to pin 31 of the At128 single-chip microcomputer IC14. Pins 5 to 8 of the switch Q10 are connected together and then connected to one end of the fuse F9. The other end of the fuse F9 is connected to pin 5 of the CH3 channel interface. Pin 2 of the CH3 channel interface is connected to the 4-channel SDI-12 communication module. Pin 4 of the switch Q14 is connected to the other end of the resistor R65 and the collector of the triode Q16. The base of the triode Q16 is connected to one end of the resistor R70 and one end of the capacitor C73. The other end of the capacitor C73 is connected to the emitter of the triode Q16 and then grounded. The other end of the resistor R70 is connected to pin 32 of the At128 single-chip microcomputer IC14. Pins 5 to 8 of the switch Q14 are connected together and then connected to one end of the fuse F11. The other end of the fuse F11 is connected to pin 5 of the CH4 channel interface. Pin 2 of the CH4 channel interface is connected to the 4-channel SDI-12 communication module;

[0007] It further includes a power supply module, and the power supply module supplies power to the main processor module, the RS-232 module, the OUT daughter board module, the IN daughter board module, the slave processor module, and the 4-channel SDI-12 communication module.

[0008] After adopting the above structure, through the setting of the SDI-12 communication module, since it is connected to external sensors and a server, the data collected by each sensor connected to the SDI-12 interface can be transmitted to the processor module for processing and then uploaded to the external server. And through the setting of the above 4-channel SDI-12 power supply module, the on-off of the corresponding sensors can be controlled, improving the portability of use. Through the setting of the present invention, it supports SDI-12 interface communication, thus better meeting the actual needs of customers for miniaturization and simplification. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is the circuit schematic diagram of the processor module of the present invention;

[0010] Figure 2 It is the circuit schematic diagram of the OUT daughter board module of the present invention;

[0011] Figure 3 It is the circuit schematic diagram of the RS-232 module of the present invention;

[0012] Figure 4This is the circuit schematic diagram of the IN daughter board module of the present utility model;

[0013] Figure 5 This is a part of the circuit schematic diagram of the power supply module of the present utility model;

[0014] Figure 6 This is the circuit schematic diagram of the present utility model with output voltage sources of 3.3V and 1.8V;

[0015] Figure 7 This is the circuit schematic diagram of the present utility model with an output voltage source of V-SIM;

[0016] Figure 8 This is the circuit schematic diagram of the serial port and interface of the present utility model;

[0017] Figure 9 This is the circuit schematic diagram of the slave processor module of the present utility model;

[0018] Figure 10 This is the circuit schematic diagram of the 4-channel SDI-12 communication module of the present utility model;

[0019] Figure 11 This is the circuit schematic diagram of the 4-channel SDI-12 power supply module of the present utility model;

[0020] Figure 12 This is the circuit schematic diagram of the SDI-12 acquisition board interface of the present utility model;

[0021] Figure 13 This is a part of the circuit schematic diagram of the power supply module of the present utility model;

[0022] Figure 14 This is the circuit schematic diagram of the test points of the present utility model. Detailed implementation manners

[0023] A new type of gateway interface circuit, as Figures 1 to 4 shown, includes a main processor module. The main processor module is respectively connected to an RS-232 module, an OUT daughter board module, and an IN daughter board module. The OUT daughter board module is connected to an external server, and the IN daughter board module is connected to a sensor to collect information. The main processor module includes an AT1284 single-chip microcomputer IC2. The AT1284 single-chip microcomputer IC2 is connected to a clock, a crystal oscillator, a program burning port J4, an SD card storage interface chip J5, a temperature acquisition chip IC3, and a serial port debugging chip J3, as Figures 9 to 12As shown, it further includes a slave processor module connected to the main processor module. The slave processor module includes an At128 single-chip microcomputer IC14. The At128 single-chip microcomputer IC14 is connected to a clock IC13, a crystal oscillator X1, and a storage chip IC12. The slave processor module is connected to a 4-channel SDI-12 communication module. The input end of the 4-channel SDI-12 communication module is connected to an SDI-12 sensor, and the output end of the 4-channel SDI-12 communication module is connected to an external server. It further includes a 4-channel SDI-12 power supply module. The 4-channel SDI-12 power supply module is connected to the 4-channel SDI-12 communication module and four external sensors, and powers each sensor and controls the on / off of the corresponding sensor through switches respectively.

[0024] Specifically, the 4-channel SDI-12 communication module includes two SDI-12 communication units with the same structure. One of the SDI-12 communication units includes a chip IC10. The chip IC10 uses a MAX13487 chip. The 1st pin of the chip IC10 is connected to one end of a capacitor C39 and a 5V voltage source, and the other end of the capacitor C39 is grounded. The 2nd pin of the chip IC10 is connected to one end of a resistor R41. The other end of the resistor R41 is connected to the negative electrode of a diode D8, one end of a resistor R44, one end of a capacitor C40, and one end of a resistor R42. The other end of the resistor R42 is connected to the output end of an external sensor, one end of a bidirectional diode D7, and the 4-channel SDI-12 power supply module. The positive electrode of the diode D8, the other end of the resistor R44, the other end of the capacitor C40, and the other end of the bidirectional diode D7 are connected together and then grounded. The 3rd pin of the chip IC10 is connected to one end of a resistor R35. The other end of the resistor R35 is connected to the negative electrode of a diode D5, one end of a resistor R37, one end of a capacitor C37, and one end of a resistor R36. The other end of the resistor R36 is connected to the output end of another external sensor, one end of a bidirectional diode D4, and the 4-channel SDI-12 power supply module. The positive electrode of the diode D5, the other end of the resistor R37, the other end of the capacitor C37, and the other end of the bidirectional diode D4 are connected together and then grounded. The 4th pin of the chip IC10 is connected to a 3V2 voltage source through a resistor R40. The 5th pin of the chip IC10 is grounded. The 6th and 7th pins of the chip IC10 are respectively connected to the 40th and 41st pins of the At128 single-chip microcomputer IC14. The 8th pin of the chip IC10 is connected to one end of a capacitor C38 and a 3V2 voltage source, and the other end of the capacitor C38 is grounded.

[0025] Specifically, the 4-channel SDI-12 power supply module includes a voltage regulator IC7. Pin 1 and pin 3 of the voltage regulator IC7 are respectively connected to one end of an inductor L1 and an inductor L2. The other end of the inductor L1 is connected to the other end of the inductor L2, one end of a resistor R11, pin 5 of the voltage regulator IC7, one end of a capacitor C27, one end of a capacitor C28, and a VCC-MAIN voltage source. The other end of the resistor R11 is connected to pin 11 of the voltage regulator IC7. Pins 2, 4, and 12 of the voltage regulator IC7 are all grounded. Pin 6 of the voltage regulator IC7 is connected to one end of a resistor R20 and pin 51 of the At128 single-chip microcomputer IC14. Pin 7 and pin 8 of the voltage regulator IC7 are respectively connected to one end of a capacitor C31 and a resistor R27. The other end of the capacitor C27 is connected to the other end of the capacitor C28, the other end of the resistor R20, the other end of the capacitor C31, the other end of the resistor R27, pin 17 of the voltage regulator IC7, and is grounded. Pin 9 of the voltage regulator IC7 is connected to one end of a capacitor C30 and one end of a capacitor C29. The other end of the capacitor C30 is connected to one end of a resistor R32. Pin 10 of the voltage regulator IC7 is connected to one end of a capacitor C26, one end of a resistor R15, and one end of a resistor R28. Pins 13 and 15 of the voltage regulator IC7 are connected together and then connected to one end of a capacitor C21, one end of a resistor R14, one end of a resistor R15, one end of a capacitor C22, one end of a capacitor C23, one end of a capacitor C25, pins 1 to 3 of a switch Q1, one end of a resistor R9, pins 1 to 3 of a switch Q3, one end of a resistor R12, pins 1 to 3 of a switch Q10, one end of a resistor R54, pins 1 to 3 of a switch Q14, one end of a resistor R65, and an output voltage terminal DC12V1. The other end of the resistor R14 is connected to the other end of the capacitor C26. The other end of the resistor R32 is connected to the other end of the capacitor C29, the other end of the resistor R28, the other end of the capacitor C22, the other end of the capacitor C23, the other end of the capacitor C25, and is grounded. The other end of the capacitor C21 is connected to pin 16 of the voltage regulator IC7. Pin 4 of the switch Q1 is connected to the other end of the resistor R9 and the collector of a triode Q2. The base of the triode Q2 is connected to one end of a resistor R10 and one end of a capacitor C20. The other end of the capacitor C20 is connected to the emitter of the triode Q2 and then grounded. The other end of the resistor R10 is connected to pin 29 of the At128 single-chip microcomputer IC14. Pins 5 to 8 of the switch Q1 are connected together and then connected to one end of a fuse F1. The other end of the fuse F1 is connected to pin 5 of a CH1 channel interface. Pin 2 of the CH1 channel interface is connected to the 4-channel SDI-12 communication module. Pin 4 of the switch Q3 is connected to the other end of the resistor R12 and the collector of a triode Q5. The base of the triode Q5 is connected to one end of a resistor R18 and one end of a capacitor C34. The other end of the capacitor C34 is connected to the emitter of the triode Q5 and then grounded. The other end of the resistor R18 is connected to pin 30 of the At128 single-chip microcomputer IC14. Pins 5 to 8 of the switch Q3 are connected together and then connected to one end of a fuse F3.The other end of the fuse F3 is connected to pin 5 of the CH2 channel interface. Pin 2 of the CH2 channel interface is connected to the 4-channel SDI-12 communication module. Pin 4 of the switch Q10 is connected to the other end of the resistor R54 and the collector of the triode Q11. The base of the triode Q11 is connected to one end of the resistor R57 and one end of the capacitor C49. The other end of the capacitor C49 is connected to the emitter of the triode Q11 and then grounded. The other end of the resistor R57 is connected to pin 31 of the At128 single-chip microcomputer IC14. Pins 5 to 8 of the switch Q10 are connected together and then connected to one end of the fuse F9. The other end of the fuse F9 is connected to pin 5 of the CH3 channel interface. Pin 2 of the CH3 channel interface is connected to the 4-channel SDI-12 communication module. Pin 4 of the switch Q14 is connected to the other end of the resistor R65 and the collector of the triode Q16. The base of the triode Q16 is connected to one end of the resistor R70 and one end of the capacitor C73. The other end of the capacitor C73 is connected to the emitter of the triode Q16 and then grounded. The other end of the resistor R70 is connected to pin 32 of the At128 single-chip microcomputer IC14. Pins 5 to 8 of the switch Q14 are connected together and then connected to one end of the fuse F11. The other end of the fuse F11 is connected to pin 5 of the CH4 channel interface. Pin 2 of the CH4 channel interface is connected to the 4-channel SDI-12 communication module.,

[0026] As Figures 5 to 7 , Figure 13 shown, it further includes a power supply module, which is connected to the main processor module, the RS-232 module, the OUT daughter board module, the IN daughter board module, the slave processor module, and the 4-channel SDI-12 communication module and supplies power to them. Through the setting of the power supply module, the portability of use is improved.

[0027] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those familiar with the technology within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A new gateway interface circuit, comprising a main processor module, the main processor module is respectively connected to an RS-232 module, an OUT sub-board module, and an IN sub-board module, the OUT sub-board module is connected to an external server, the IN sub-board module is connected to a sensor to collect information, the main processor module comprises an AT1284 single-chip microcomputer IC2, the AT1284 single-chip microcomputer IC2 is connected to a clock, a crystal oscillator, a program burning port J4, an SD card storage interface chip J5, a temperature acquisition chip IC3 and a serial port debugging chip J3, characterized in that: It also includes a slave processor module connected to the main processor module, the slave processor module includes an At128 single-chip microcomputer IC14, the At128 single-chip microcomputer IC14 is connected to a clock IC13, a crystal oscillator X1, and a storage chip IC12, the slave processor module is connected to a 4-way SDI-12 communication module, the input end of the 4-way SDI-12 communication module is connected to an SDI-12 sensor, and the output end of the 4-way SDI-12 communication module is connected to an external server, and it also includes a 4-way SDI-12 power supply module, the 4-way SDI-12 power supply module is connected to the 4-way SDI-12 communication module and four external sensors, it supplies power to the four sensors and controls the on and off of the corresponding sensors through switches.

2. A novel gateway interface circuit according to claim 1, characterized in that: The 4-way SDI-12 communication module includes two SDI-12 communication units with the same structure, wherein one of the SDI-12 communication units includes a chip IC10, wherein the 1st pin of the chip IC10 is connected to one end of a capacitor C39 and a 5V voltage source, and the other end of the capacitor C39 is grounded, and the 2nd pin of the chip IC10 is connected to one end of a resistor R41, and the other end of the resistor R41 is connected to the cathode of a diode D8, one end of a resistor R44, one end of a capacitor C40, and one end of a resistor R42, and the other end of the resistor R42 is connected to the output end of an external sensor, one end of a bidirectional diode D7, and the 4-way SDI-12 power supply module, and the anode of the diode D8, the other end of the resistor R44, the other end of the capacitor C40, and the other end of the bidirectional diode D7 are connected and then grounded, and the 3rd pin of the chip IC10 is connected One end of resistor R35, the other end of the resistor R35 is connected to the cathode of diode D5, one end of resistor R37, one end of capacitor C37, and one end of resistor R36, the other end of the resistor R36 is connected to the output end of another external sensor, one end of bidirectional diode D4 and the 4-way SDI-12 power supply module, the anode of diode D5, the other end of resistor R37, the other end of capacitor C37, and the other end of bidirectional diode D4 are connected and then grounded, pin 4 of the chip IC10 is connected to the 3V2 voltage source through resistor R40, pin 5 of the chip IC10 is grounded, pins 6 and 7 of the chip IC10 are respectively connected to pins 40 and 41 of the At128 single-chip microcomputer IC14, pin 8 of the chip IC10 is connected to one end of capacitor C38 and the 3V2 voltage source, and the other end of the capacitor C38 is grounded.

3. A novel gateway interface circuit according to claim 1, characterized in that: The 4-way SDI-12 power supply module includes a voltage regulator IC7, wherein the 1st and 3rd pins of the voltage regulator IC7 are respectively connected to one end of the inductor L1 and the inductor L2, the other end of the inductor L1 is connected to the other end of the inductor L2, one end of the resistor R11, the 5th pin of the voltage regulator IC7, one end of the capacitor C27, one end of the capacitor C28 and the VCC-MAIN voltage source, the other end of the resistor R11 is connected to the 11th pin of the voltage regulator IC7, the 2nd, 4th and 12th pins of the voltage regulator IC7 are all grounded, the 6th pin of the voltage regulator IC7 is connected to one end of the resistor R20 and the 51st pin of the At128 single-chip computer IC14, the 7th and 8th pins of the voltage regulator IC7 are respectively connected to the capacitor C31 and one end of the resistor R27, the capacitor C The other end of 27 is connected to the other end of the capacitor C28, the other end of the resistor R20, the other end of the capacitor C31, the other end of the resistor R27, and the 17th pin of the voltage regulator IC7 and grounded. The 9th pin of the voltage regulator IC7 is connected to one end of the capacitor C30 and one end of the capacitor C29. The other end of the capacitor C30 is connected to one end of the resistor R32. The 10th pin of the voltage regulator IC7 is connected to one end of the capacitor C26, one end of the resistor R15, and one end of the resistor R28. The 13th and 15th pins of the voltage regulator IC7 are connected and then connected to one end of the capacitor C21, one end of the resistor R14, one end of the resistor R15, one end of the capacitor C22, one end of the capacitor C23, one end of the capacitor C25, 1 to 3 pins of the switch Q1, one end of the resistor R9, 1 to 3 pins of the switch Q3, and one end of the resistor R12. , pins 1 to 3 of switch Q10, one end of resistor R54, pins 1 to 3 of switch Q14, one end of resistor R65 and output voltage end DC12V1, the other end of the resistor R14 is connected to the other end of the capacitor C26, the other end of the resistor R32 is connected to the other end of the capacitor C29, the other end of the resistor R28, the other end of the capacitor C22, the other end of the capacitor C23, the other end of the capacitor C25 and grounded, the other end of the capacitor C21 is connected to pin 16 of the regulator IC7, pin 4 of the switch Q1 is connected to the other end of the resistor R9 and the collector of the transistor Q2, the base of the transistor Q2 is connected to one end of the resistor R10 and one end of the capacitor C20, the other end of the capacitor C20 is connected to the emitter of the transistor Q2 and then grounded, the The other end of the resistor R10 is connected to the 29th pin of the At128 single-chip computer IC14, the 5th to 8th pins of the switch Q1 are connected and then connected to one end of the fuse F1, the other end of the fuse F1 is connected to the 5th pin of the CH1 channel interface, the 2nd pin of the CH1 channel interface is connected to the 4-way SDI-12 communication module, the 4th pin of the switch Q3 is connected to the other end of the resistor R12 and the collector of the transistor Q5, the base of the transistor Q5 is connected to one end of the resistor R18 and one end of the capacitor C34, the other end of the capacitor C34 is connected to the emitter of the transistor Q5 and then grounded, the other end of the resistor R18 is connected to the 30th pin of the At128 single-chip computer IC14, the 5th to 8th pins of the switch Q3 are connected and then connected to one end of the fuse F3,The other end of the fuse F3 is connected to pin 5 of the CH2 channel interface, pin 2 of the CH2 channel interface is connected to the 4-way SDI-12 communication module, pin 4 of the switch Q10 is connected to the other end of the resistor R54 and the collector of the transistor Q11, the base of the transistor Q11 is connected to one end of the resistor R57 and one end of the capacitor C49, the other end of the capacitor C49 is connected to the emitter of the transistor Q11 and then grounded, the other end of the resistor R57 is connected to pin 31 of the At128 single-chip computer IC14, pins 5 to 8 of the switch Q10 are connected and then connected to one end of the fuse F9, the other end of the fuse F9 is connected to pin 5 of the CH3 channel interface, and the C Pin 2 of the H3 channel interface is connected to the 4-way SDI-12 communication module, pin 4 of the switch Q14 is connected to the other end of the resistor R65 and the collector of the transistor Q16, the base of the transistor Q16 is connected to one end of the resistor R70 and one end of the capacitor C73, the other end of the capacitor C73 is connected to the emitter of the transistor Q16 and then grounded, the other end of the resistor R70 is connected to pin 32 of the At128 microcontroller IC14, pins 5 to 8 of the switch Q14 are connected and then connected to one end of the fuse F11, the other end of the fuse F11 is connected to pin 5 of the CH4 channel interface, and pin 2 of the CH4 channel interface is connected to the 4-way SDI-12 communication module.

4. A new gateway interface circuit according to any one of claims 1 to 3, characterized in that: It also includes a power supply module, which is connected to the main processor module, RS-232 module, OUT daughter board module, IN daughter board module, slave processor module, and the 4-way SDI-12 communication module for power supply.

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