Multi-sensor information transmitting and recording circuit

Abstract

The utility model discloses a multi-sensor information transmitting and recording circuit, which mainly comprises a main control chip, a multi-sensor unit, a communication unit and a recording unit, on one hand, the main control chip communicates with various sensors through the multi-sensor unit to obtain real-time environment monitoring data, and on the other hand, the main control chip communicates with the TCU to obtain TCU operation state information and sun-tracking control information. The main control chip gathers the information and then stores the information in an SD card through a recording unit. In addition, the main control chip is also connected and communicated with the control platform through the communication unit, and sends the acquired data to the control platform for analysis. When the main communication channel is interrupted, the main control chip can be switched to the standby communication channel to communicate with the control platform, and if the standby channel is also interrupted, the SD card can be adopted as a temporary communication channel to communicate with the control platform, so that the communication of the whole system cannot be completely disconnected. The device also has the advantages of simple structure, convenience in operation and easiness in real-time operation.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic power generation technology, and in particular to a multi-sensor information transmission and recording circuit for photovoltaic power generation projects. Background Technology

[0002] In the field of photovoltaic power generation engineering, the control station controls several NCUs (Intelligent Communication Units), which in turn control several TCUs (Tracking Units / Solar Tracking Controllers / Support Controllers). The TCUs then control the rotation of the photovoltaic panels to achieve maximum power generation. The NCUs obtain a large amount of environmental data through monitoring, while the TCUs obtain data about the sun. In existing technologies, the NCUs and control station generally communicate using a single protocol, which cannot guarantee normal communication in the event of faults, interference, or poor signal.

[0003] Therefore, existing technologies need further improvement and refinement. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a multi-sensor information transmission and recording circuit for photovoltaic power generation projects.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A multi-sensor information transmission and recording circuit mainly includes a main control chip, a multi-sensor unit, a communication unit, and a recording unit. The main control chip is connected to the multi-sensor unit, the communication unit, and the recording unit. The recording unit serves as a temporary communication unit when communication is interrupted.

[0007] Specifically, the multi-sensor unit includes a first chip, first to fourth resistors, a first diode, a second diode, a first fuse, a second fuse, a first capacitor, and a first terminal. The first and fourth terminals of the first chip are connected to the main control chip. The second and third terminals are connected to the main control chip via the first resistor. The fourth terminal is connected to a 3.3V voltage terminal via the second resistor. The fifth terminal is grounded. The sixth terminal is connected to the second terminal of the first terminal via the first fuse, and simultaneously connected to a 5V voltage terminal via the third resistor and grounded via the first diode. The seventh terminal is connected to the third terminal of the first terminal via the second fuse, and also grounded via the fourth resistor and the second diode. The eighth terminal is connected to the 3.3V voltage terminal. The first terminal is connected to a 12V voltage terminal, and the fourth terminal is grounded.

[0008] The 3.3V voltage terminal is grounded through the first capacitor.

[0009] In a preferred embodiment of this invention, the multi-sensor unit further includes several connection terminals. All of these connection terminals are connected in parallel with the first terminal.

[0010] As a preferred embodiment of this utility model, the multi-sensor unit further includes a second terminal, a third fuse, a third diode, a first light-emitting diode, a fifth to a seventh resistor, and a first transistor.

[0011] Specifically, the first terminal of the second terminal is connected to the 12V voltage terminal, the second terminal is connected to the 5V voltage terminal through the third fuse, the third terminal is connected in series with the base of the first transistor through the first LED and the fifth resistor, and the fourth terminal is grounded. The collector of the first transistor is connected to the main control chip and is also connected to the 3.3V voltage terminal through the sixth resistor, and the emitter is grounded. The third diode is connected in parallel with the first LED. One end of the seventh resistor is grounded, and the other end is connected to the junction of the first LED and the fifth resistor. This module acts as a trigger switch when the snow accumulation reaches a certain level. During installation, the trigger switch needs to be activated outside the second terminal. One end of the switch is connected to either the first (12V) or the second (5V) terminal of the second terminal, and the other end is connected to the third terminal of the second terminal. When the snow accumulation has not reached the set weight, the switch is in the open state, the first transistor is cut off, and the main control chip receives a high-level signal. When the snow accumulation exceeds the set value, the switch closes, the first transistor conducts, and the voltage level of the main control chip's pin is pulled low. The main control chip can determine whether the current snow accumulation exceeds the set range by the high and low voltage levels of the signal pin.

[0012] The second terminal is a multiplexed terminal, which can be used to obtain the snow thickness signal and also to connect other modules that require power. That is, this terminal provides 12V and 5V voltages for external modules, thereby further improving the expandability of the module and making it suitable for more occasions.

[0013] As a preferred embodiment of this utility model, the communication unit includes a second chip, eighth to twelfth resistors, a second capacitor, a third capacitor, a second light-emitting diode, and a configuration button.

[0014] Specifically, the first terminal of the second chip is connected to ground via a second LED and an eighth resistor; the second terminal is connected to the main control chip via a ninth resistor; the third terminal is connected to the main control chip via a tenth resistor; the fifth terminal is connected to the 3.3V voltage terminal via an eleventh resistor; it is also grounded via a second capacitor; the seventh terminal is grounded; and the eighth terminal is connected to the 3.3V voltage terminal via a twelfth resistor. The configuration button is connected in parallel with the second capacitor. The 3.3V voltage terminal is grounded via a third capacitor. This module serves as the main communication channel between the NCU and the control station. The module includes an RJ45 network communication interface, through which communication between the control station and the main control chip can be achieved. When this main communication channel is interrupted, the main control chip can switch to a backup communication circuit, using GPRS to connect to the Internet to achieve temporary communication with the control station.

[0015] As a preferred embodiment of this utility model, the communication unit is further provided with a backup communication circuit, which mainly includes a third chip, a thirteenth to sixteenth resistor, a fourth diode, a fifth diode, a fourth fuse, a fifth fuse, a fourth capacitor, and a third terminal.

[0016] Specifically, the first and fourth terminals of the third chip are connected to the main control chip. The second terminal is connected to the third terminal and then to the main control chip via a thirteenth resistor. The fourth terminal is connected to the 3.3V voltage terminal via a fourteenth resistor. The fifth terminal is grounded. The sixth terminal is connected to the first terminal of the third terminal via a fourth fuse and to the 5V voltage terminal via a fifteenth resistor. It is also grounded via a fourth diode. The seventh terminal is connected to the second terminal of the third terminal via a fifth fuse and is also grounded via a sixteenth resistor and a fifth diode. The eighth terminal is connected to the 3.3V voltage terminal. The 3.3V voltage terminal is grounded via a fourth capacitor.

[0017] As described in this invention, the recording unit includes a fourth chip, seventeenth to twenty-second resistors, fifth to eighth capacitors, a third light-emitting diode, a crystal oscillator, and a fourth terminal.

[0018] Specifically, the first and eighteenth to twenty-second terminals of the fourth chip are connected to the main control chip, the third and fourth terminals are grounded, the seventh terminal is connected to the seventh terminal of the fourth terminal and is also connected to the 3.3V voltage terminal through the seventeenth resistor, the ninth terminal is connected to the twenty-seventh and twenty-eighth terminals and the 3.3V voltage terminal, the twelfth terminal is grounded and connected to the 3.3V voltage terminal through the fifth capacitor, the thirteenth terminal is connected to the fourteenth terminal through a crystal oscillator, the fourteenth terminal is grounded through the sixth capacitor, the twenty-third terminal is connected to the second terminal of the fourth terminal through the eighteenth resistor, the twenty-fourth terminal is connected to the 3.3V voltage terminal through the nineteenth resistor and the third LED in series, the twenty-fifth terminal is connected to the third terminal of the fourth terminal and is also connected to the 3.3V voltage terminal through the twentieth resistor, the twenty-sixth terminal is connected to the fifth terminal of the fourth terminal and is also connected to the 3.3V voltage terminal through the twenty-first resistor. The fourth terminal of the fourth terminal is connected to the 3.3V voltage terminal, the sixth and tenth to thirteenth terminals are grounded, the ninth terminal is connected to the main control chip and is connected to the 3.3V voltage terminal through the twenty-second resistor. The 3.3V voltage terminal is grounded through the seventh and eighth capacitors respectively. When this unit is working, it is responsible for saving the environmental data (such as wind direction, wind force, temperature, humidity, irradiance, sunrise, sunset, rain, snow, etc.) and system operation data collected by the main control chip to the SD card for subsequent data analysis.

[0019] When both the primary communication channel (second chip) and the backup communication channel (third chip) fail to communicate normally, an SD card can be used as a medium for data exchange to solve the temporary communication problem between the NCU and the control station. The control station saves the commands to be executed on the SD card, and then inserts the SD card into each NCU to execute them. Conversely, each NCU transmits the acquired data back to the control station through the SD card. Although the communication efficiency is reduced, it can ensure that the NCU and the control station will not be completely disconnected.

[0020] As a preferred embodiment of this utility model, both the first diode and the second diode are transient suppression diodes.

[0021] As a preferred embodiment of this utility model, both the fourth diode and the fifth diode are transient suppression diodes.

[0022] As a preferred embodiment of this utility model, one or more sensors selected from the following categories—rain gauge sensor, wind speed and direction sensor, snow depth sensor, and radiation sensor—are connected in parallel to the connection terminal. These sensors all use the RS485 communication protocol and are all connected to the same bus. They identify each other through communication addresses, thereby achieving a master-slave networking scheme with the main control chip.

[0023] In a preferred embodiment of this invention, the third terminal is externally connected to a GPRS module. The main control chip connects to the GPRS module via the third chip to achieve internet connectivity, thereby establishing communication between the NCU and the control station.

[0024] The working process and principle of this invention are as follows: The main control chip communicates with various sensors through a multi-sensor unit to obtain real-time environmental monitoring data. Simultaneously, it communicates with several lower-level TCUs to obtain operating status information and solar tracking control information for each TCU. The main control chip aggregates this information and saves it to an SD card via a recording unit. Additionally, the main control chip connects and communicates with the control station via a communication unit, sending the acquired data to the control station for analysis. When the main communication channel is interrupted, the main control chip can switch to a backup communication channel to communicate with the control station. If the backup channel is also interrupted, the SD card can be used as a temporary communication channel to communicate with the control station, thus ensuring that the entire system communication is not completely disconnected. This invention also has the advantages of simple structure, convenient operation, and easy real-time monitoring.

[0025] Compared with the prior art, the present invention also has the following advantages:

[0026] (1) The multi-sensor information transmission and recording circuit provided by this utility model adopts a multi-channel communication scheme design with main communication channel, backup communication channel and temporary communication channel to ensure the communication between NCU and control station to the greatest extent, thereby ensuring the stable and orderly operation of photovoltaic power generation system.

[0027] (2) The multi-sensor information transmission and recording circuit provided by this utility model uses multiple sensors mounted on the same bus and the switching sensor directly feeds back to the main control chip to transmit sensor data. This can save the pin resources of the main control chip and also take into account the real-time performance of the data, so that the control system can efficiently acquire data and react in real time.

[0028] (3) The multi-sensor information transmission and recording circuit provided by this utility model stores environmental data, operation data and other information acquired during operation into an SD card for backup, and also provides the control station with data analysis, which is beneficial to the improvement and optimization of the control system in the future. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the multi-sensor unit circuit of the multi-sensor information transmission and recording circuit provided by this utility model.

[0030] Figure 2 This is a circuit diagram of the switching quantity part of the multi-sensor unit provided by this utility model.

[0031] Figure 3 This is a circuit diagram of the communication unit (main channel) provided by this utility model.

[0032] Figure 4 This is a circuit diagram of the communication unit (backup channel) provided by this utility model.

[0033] Figure 5 This is a circuit diagram of the recording unit provided by this utility model.

[0034] Explanation of the reference numerals in the above figures:

[0035] U1 - First chip, R1 to R4 - First to fourth resistors, D1 - First diode, D2 - Second diode, F1 - First fuse, F2 - Second fuse, C1 - First capacitor, P1 - First terminal, P5 - Connection terminal, P2 - Second terminal, F3 - Third fuse, D3 - Third diode, LED1 - First light-emitting diode, R5 to R7 - Fifth to seventh resistors, Q1 - First transistor;

[0036] U2 - Second chip, R8 to R12 - Eighth to twelfth resistors, C2 - Second capacitor, C3 - Third capacitor, LED2 - Second light-emitting diode, K1 - Configuration button; U3 - Third chip, R13 to R16 - Thirteenth to sixteenth resistors, D4 - Fourth diode, D5 - Fifth diode, F4 - Fourth fuse, F5 - Fifth fuse, C4 - Fourth capacitor, P3 - Third terminal;

[0037] U4 - Fourth chip, R17 to R22 - Seventeenth to twenty-second resistors, C5 to C8 - Fifth to eighth capacitors, LED3 - Third light-emitting diode, Y1 - Crystal oscillator, P4 - Fourth terminal. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this utility model clearer and more explicit, the present utility model will be further described below with reference to the accompanying drawings and embodiments.

[0039] Example 1:

[0040] like Figures 1 to 5 As shown, this embodiment discloses a multi-sensor information transmission and recording circuit, mainly including a main control chip, a multi-sensor unit, a communication unit, and a recording unit. The main control chip is connected to the multi-sensor unit, the communication unit, and the recording unit respectively. The recording unit serves as a temporary communication unit when communication is interrupted.

[0041] Specifically, the multi-sensor unit includes a first chip U1, first to fourth resistors R1 to R4, a first diode D1, a second diode D2, a first fuse F1, a second fuse F2, a first capacitor C1, and a first terminal P1. The first and fourth terminals of the first chip U1 are connected to the main control chip. The second and third terminals are connected to the main control chip via the first resistor R1. The fourth terminal is connected to a 3.3V voltage terminal via the second resistor R2. The fifth terminal is grounded. The sixth terminal is connected to the second terminal of the first terminal P1 via the first fuse F1, and simultaneously connected to a 5V voltage terminal via the third resistor R3, and also grounded via the first diode D1. The seventh terminal is connected to the third terminal of the first terminal P1 via the second fuse F2, and is also grounded via the fourth resistor R4 and the second diode D2. The eighth terminal is connected to the 3.3V voltage terminal. The first terminal P1 is connected to a 12V voltage terminal, and the fourth terminal is grounded. The 3.3V voltage terminal is grounded via the first capacitor C1.

[0042] In a preferred embodiment of this invention, the multi-sensor unit further includes several connection terminals P5. Each of the connection terminals P5 is connected in parallel with the first terminal P1.

[0043] As a preferred embodiment of this utility model, the multi-sensor unit further includes a second terminal P2, a third fuse F3, a third diode D3, a first light-emitting diode LED1, fifth to seventh resistors R5 to R7, and a first transistor Q1.

[0044] Specifically, the first terminal of the second terminal P2 is connected to the 12V voltage terminal, the second terminal is connected to the 5V voltage terminal through the third fuse F3, the third terminal is connected in series with the base of the first transistor Q1 through the first light-emitting diode LED1 and the fifth resistor R5, and the fourth terminal is grounded. The collector of the first transistor Q1 is connected to the main control chip and is also connected to the 3.3V voltage terminal through the sixth resistor R6, and the emitter is grounded. The third diode D3 is connected in parallel with the first light-emitting diode LED1. One end of the seventh resistor R7 is grounded, and the other end is connected to the junction of the first light-emitting diode LED1 and the fifth resistor R5. This module acts as a trigger switch when the snow accumulation reaches a certain level. During installation, the trigger switch needs to be connected externally to the second terminal P2. One end of the switch is connected to the first terminal (12V voltage terminal) or the second terminal (5V voltage terminal) of the second terminal P2, and the other end is connected to the third terminal of the second terminal P2. When the snow accumulation has not reached the set weight, this switch is in the open state, the first transistor Q1 is cut off, and the main control chip receives a high-level signal. When the snow accumulation exceeds the set value, the switch is closed, the first transistor Q1 is turned on, and the pin level of the main control chip is pulled low. The main control chip can determine whether the current snow accumulation exceeds the set range by the high and low level states of the signal pin.

[0045] The second terminal P2 is a multiplexed terminal. It can be used to obtain the snow thickness signal and also to connect other modules that require power. That is, this terminal provides 12V and 5V voltages for external modules, thereby further improving the expandability of the module and making it suitable for more occasions.

[0046] As a preferred embodiment of this utility model, the communication unit includes a second chip U2, eighth to twelfth resistors R8 to R12, a second capacitor C2, a third capacitor C3, a second light-emitting diode LED2, and a configuration button K1.

[0047] Specifically, the first terminal of the second chip U2 is connected to ground via the second light-emitting diode LED2 and the eighth resistor R8; the second terminal is connected to the main control chip via the ninth resistor R9; the third terminal is connected to the main control chip via the tenth resistor R10; the fifth terminal is connected to the 3.3V voltage terminal via the eleventh resistor R11; it is also grounded via the second capacitor C2; the seventh terminal is grounded; and the eighth terminal is connected to the 3.3V voltage terminal via the twelfth resistor R12. The configuration button K1 is connected in parallel with the second capacitor C2. The 3.3V voltage terminal is grounded via the third capacitor C3. This module serves as the main communication channel between the NCU and the control station. The module includes an RJ45 network communication interface, through which the control station and the main control chip can communicate. When this main communication channel is interrupted, the main control chip can switch to the backup communication circuit and temporarily communicate with the control station via GPRS internet connection.

[0048] As a preferred embodiment of this utility model, the communication unit is further provided with a backup communication circuit, which mainly includes a third chip U3, thirteenth to sixteenth resistors R13 to R16, a fourth diode D4, a fifth diode D5, a fourth fuse F4, a fifth fuse F5, a fourth capacitor C4, and a third terminal P3.

[0049] Specifically, the first and fourth terminals of the third chip U3 are connected to the main control chip, the second terminal is connected to the third terminal and then to the main control chip through the thirteenth resistor R13, the fourth terminal is connected to the 3.3V voltage terminal through the fourteenth resistor R14, the fifth terminal is grounded, the sixth terminal is connected to the first terminal of the third terminal P3 through the fourth fuse F4, and is also connected to the 5V voltage terminal through the fifteenth resistor R15, and is also grounded through the fourth diode D4, the seventh terminal is connected to the second terminal of the third terminal P3 through the fifth fuse F5, and is also grounded through the sixteenth resistor R16 and the fifth diode D5, and the eighth terminal is connected to the 3.3V voltage terminal. The 3.3V voltage terminal is grounded through the fourth capacitor C4.

[0050] As described in this utility model, the recording unit includes a fourth chip U4, seventeenth to twenty-second resistors R17 to R22, fifth to eighth capacitors C5 to C8, a third light-emitting diode LED3, a crystal oscillator Y1, and a fourth terminal P4.

[0051] Specifically, the first and eighteenth to twenty-second terminals of the fourth chip U4 are connected to the main control chip, the third and fourth terminals are grounded, the seventh terminal is connected to the seventh terminal of the fourth terminal P4, and is also connected to the 3.3V voltage terminal through the seventeenth resistor R17, the ninth terminal is connected to the twenty-seventh and twenty-eighth terminals and the 3.3V voltage terminal, the twelfth terminal is grounded and connected to the 3.3V voltage terminal through the fifth capacitor C5, the thirteenth terminal is connected to the fourteenth terminal through the crystal oscillator Y1, the fourteenth terminal is grounded through the sixth capacitor C6, the twenty-third terminal is connected to the second terminal of the fourth terminal P4 through the eighteenth resistor R18, the twenty-fourth terminal is connected to the 3.3V voltage terminal through the nineteenth resistor R19 and the third light-emitting diode LED3 connected in series, the twenty-fifth terminal is connected to the third terminal of the fourth terminal P4, and is also connected to the 3.3V voltage terminal through the twentieth resistor R20, the twenty-sixth terminal is connected to the fifth terminal of the fourth terminal P4, and is also connected to the 3.3V voltage terminal through the twenty-first resistor R21. The fourth terminal P4 is connected to the 3.3V voltage terminal. The sixth and tenth to thirteenth terminals are grounded, and the ninth terminal is connected to the main control chip and then connected to the 3.3V voltage terminal through the twenty-second resistor R22. The 3.3V voltage terminal is grounded through the seventh capacitor C7 and the eighth capacitor C8. During operation, this unit is responsible for saving environmental data (such as wind direction, wind speed, temperature, humidity, irradiance, sunrise, sunset, rainfall, and snow information) and system operation data collected by the main control chip to an SD card for subsequent data analysis.

[0052] When both the main communication channel (second chip U2) and the backup communication channel (third chip U3) fail to communicate normally, in order to solve the temporary communication problem between the NCU and the control station, the SD card can be used as the medium for data exchange. The control station saves the executed commands on the SD card, and then inserts the SD card into each NCU for execution. Conversely, each NCU transmits the acquired data back to the control station through the SD card. Although the communication efficiency is reduced, it can ensure that the NCU and the control station will not be completely disconnected.

[0053] As a preferred embodiment of this utility model, both the first diode D1 and the second diode D2 are transient suppression diodes.

[0054] As a preferred embodiment of this utility model, both the fourth diode D4 and the fifth diode D5 are transient suppression diodes.

[0055] As a preferred embodiment of this utility model, one or more sensors selected from the following are connected in parallel to the connection terminal P5: a rain gauge sensor, a wind speed and direction sensor, a snow depth sensor, and an irradiance sensor. These sensors all use the RS485 communication protocol and are all connected to the same bus. They identify different devices through communication addresses, thereby achieving a master-slave networking scheme with the main control chip.

[0056] In a preferred embodiment of this invention, the third terminal P3 is externally connected to a GPRS module. The main control chip connects to the GPRS module via the third chip U3 to achieve internet connectivity, thereby establishing communication between the NCU and the control station.

[0057] The working process and principle of this invention are as follows: The main control chip communicates with various sensors through a multi-sensor unit to obtain real-time environmental monitoring data. Simultaneously, it communicates with several lower-level TCUs to obtain operating status information and solar tracking control information for each TCU. The main control chip aggregates this information and saves it to an SD card via a recording unit. Additionally, the main control chip connects and communicates with the control station via a communication unit, sending the acquired data to the control station for analysis. When the main communication channel is interrupted, the main control chip can switch to a backup communication channel to communicate with the control station. If the backup channel is also interrupted, the SD card can be used as a temporary communication channel to communicate with the control station, thus ensuring that the entire system communication is not completely disconnected. This invention also has the advantages of simple structure, convenient operation, and easy real-time monitoring.

[0058] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A multi-sensor information transfer and recording circuit, characterized by comprising: It comprises a main control chip, a multi-sensor unit, a communication unit and a recording unit; the main control chip is connected with the multi-sensor unit, the communication unit and the recording unit respectively; the recording unit serves as a temporary communication unit when the communication is interrupted; The multi-sensor unit comprises a first chip, first to fourth resistors, a first diode, a second diode, a first fuse, a second fuse, a first capacitor and a first terminal; the first end and the fourth end of the first chip are connected with the main control chip respectively, the second end and the third end are connected and then connected with the main control chip through the first resistor, the fourth end is connected with a 3.3V voltage end through the second resistor, the fifth end is grounded, the sixth end is connected with the second end of the first terminal through the first fuse and is grounded through the first diode, the seventh end is connected with the third end of the first terminal through the second fuse and is grounded through the fourth resistor and the second diode respectively, the eighth end is connected with the 3.3V voltage end; the first end of the first terminal is connected with a 12V voltage end and the fourth end is grounded; the 3.3V voltage end is grounded through the first capacitor.

2. The multi-sensor information delivery and logging circuit of claim 1, wherein, The multi-sensor unit further comprises a plurality of connection terminals; the plurality of connection terminals are connected with the first terminal in parallel.

3. The multi-sensor information delivery and logging circuit of claim 1, wherein, The multi-sensor unit further comprises a second terminal, a third fuse, a third diode, a first light emitting diode, fifth to seventh resistors and a first triode; The first end of the second terminal is connected with a 12V voltage end, the second end is connected with a 5V voltage end through the third fuse, the third end is connected to the base of the first triode through the first light emitting diode and the fifth resistor in series, and the fourth end is grounded; the collector of the first triode is connected with the main control chip and is connected with the 3.3V voltage end through the sixth resistor, and the emitter is grounded; the third diode is connected with the first light emitting diode in parallel; one end of the seventh resistor is grounded and the other end is connected to the connection point of the first light emitting diode and the fifth resistor.

4. The multi-sensor information delivery and logging circuit of claim 1, wherein, The communication unit comprises a second chip, eighth to twelfth resistors, a second capacitor, a third capacitor, a second light emitting diode and a configuration button; The first end of the second chip is connected to the ground through the second light emitting diode and the eighth resistor in series, the second end is connected with the main control chip through the ninth resistor, the third end is connected with the main control chip through the tenth resistor, the fifth end is connected with the 3.3V voltage end through the eleventh resistor and is grounded through the second capacitor, the seventh end is grounded, and the eighth end is connected with the 3.3V voltage end through the twelfth resistor; the configuration button is connected with the second capacitor in parallel; The 3.3V voltage end is grounded through the third capacitor.

5. The multi-sensor information delivery and logging circuit of claim 1, wherein, The communication unit is further provided with a backup communication circuit comprising a third chip, thirteenth to sixteenth resistors, a fourth diode, a fifth diode, a fourth fuse, a fifth fuse, a fourth capacitor and a third terminal; The first end and the fourth end of the third chip are connected with the master control chip, the second end is connected with the third end and then connected with the master control chip through the thirteenth resistor, the fourth end is connected with the 3.3V voltage end through the fourteenth resistor, the fifth end is grounded, the sixth end is connected with the first end of the third terminal through the fourth fuse, is connected with the 5V voltage end through the fifteenth resistor, and is grounded through the fourth diode, the seventh end is connected with the second end of the third terminal through the fifth fuse, is grounded through the sixteenth resistor and the fifth diode, respectively, and the eighth end is connected with the 3.3V voltage end; the 3.3V voltage end is grounded through the fourth capacitor.

6. The multi-sensor information delivery and logging circuit of claim 1, wherein, The recording unit comprises a fourth chip, seventeenth to twenty-second resistors, fifth to eighth capacitors, a third light emitting diode, a crystal oscillator, and a fourth terminal; The first end and the eighteenth to twenty-second end of the fourth chip are connected with the master control chip, the third end and the fourth end are grounded, the seventh end is connected with the seventh end of the fourth terminal, is connected to the 3.3V voltage end through the seventeenth resistor, the ninth end is connected with the twenty-seventh end, the twenty-eighth end and the 3.3V voltage end, the twelfth end is grounded and connected with the 3.3V voltage end through the fifth capacitor, the thirteenth end is connected with the fourteenth end through the crystal oscillator, the fourteenth end is grounded through the sixth capacitor, the twenty-third end is connected with the second end of the fourth terminal through the eighteenth resistor, the twenty-fourth end is connected to the 3.3V voltage end through the nineteenth resistor and the third light emitting diode, the twenty-fifth end is connected with the third end of the fourth terminal and is connected to the 3.3V voltage end through the twentieth resistor, the twenty-sixth end is connected with the fifth end of the fourth terminal and is connected to the 3.3V voltage end through the twenty-first resistor; the fourth end of the fourth terminal is connected to the 3.3V voltage end, the sixth end, the tenth to thirteenth ends are grounded, the ninth end is connected with the master control chip and connected to the 3.3V voltage end through the twenty-second resistor; The 3.3V voltage end is grounded through the seventh capacitor and the eighth capacitor, respectively.

7. The multi-sensor information delivery and logging circuit of claim 1, wherein, The first diode and the second diode are both transient suppression diodes.

8. The multi-sensor information delivery and logging circuit of claim 5, wherein, The fourth diode and the fifth diode are both transient suppression diodes.

9. The multi-sensor information delivery and logging circuit of claim 2, wherein, One or more sensors among a rain bucket sensor, a wind speed and direction sensor, a snow depth sensor, and an irradiation sensor are connected in parallel on the connection terminal.

10. The multi-sensor information delivery and logging circuit of claim 5, wherein, The third terminal is externally connected with a GPRS module.

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