Processing circuit board for greenhouse control

Abstract

The utility model discloses a processing circuit board used for greenhouse control, comprising a main control module arranged on the circuit board and used for controlling the on-off state of an output interface; the main control module is used for controlling the on-off state of the acquisition input interface; the main control module communicates with the peripheral communication module and the sub-machine communication module through an RS485 interface; the main control module communicates with the display communication module through an RS232 interface; the main control module communicates with the entity key circuit board through the IIC interface; the main control module realizes storage and reading of working data through the storage module; the main control module is electrically connected with the peripheral communication module, the sub-machine communication module, the state indication module, the storage module, the display communication module, the 4G communication module and the expansion connection module. Safe operation of the greenhouse is guaranteed through the power supply module, the isolation power supply module and the power-off backup power supply module, expansion parts for greenhouse control are enhanced through the expansion connection module, and the cloud platform is linked through the 4G communication module.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic circuit technical field especially relates to a processing circuit board for greenhouse control. BACKGROUND

[0002] Greenhouse technology plays a crucial role in modern agriculture. It not only provides a relatively stable growing environment for crops, effectively resisting adverse weather and natural disasters, but also adjusts temperature, humidity, light, and other growth conditions to achieve off-season planting and efficient production of crops. The application of greenhouse technology has greatly improved the yield and quality of agricultural products, ensuring the stability and sustainability of agricultural production, and has important significance for promoting agricultural economic development and meeting people's demand for fresh agricultural products.

[0003] With the progress of science and technology and the acceleration of agricultural modernization, existing greenhouse technology has made significant progress. The structure of the greenhouse has evolved from simple bamboo and wood structures to current steel structures, glass steel structures, and intelligent greenhouses, which are more durable and easier to manage. At the same time, the greenhouse is equipped with various advanced agricultural facilities such as irrigation systems, temperature control systems, ventilation systems, etc., which can achieve precise control of the growing environment for crops. In addition, the Internet of Things technology, sensor technology, and remote monitoring technology are introduced into the greenhouse, making agricultural production more intelligent and refined. The application of these technologies not only improves the yield and quality of crops but also reduces the labor cost of agricultural production, improving the overall efficiency of agricultural production.

[0004] Although existing greenhouse technology has made great progress, there are still some shortcomings. Among them, communication inconvenience is a problem that needs to be solved. Most existing greenhouse systems use wired communication, which is complex and has high maintenance costs, and it is difficult to achieve real-time remote monitoring and data transmission. In addition, the existing greenhouse system has few expansion functions, making it difficult to meet the diverse needs of agricultural production. For example, some greenhouse systems lack linkage control functions with other agricultural facilities, making it impossible to achieve intelligent management and automated operations. In addition, the low level of intelligence is also a shortcoming of existing greenhouse technology. Although some intelligent technologies have been introduced, the overall level of intelligence of the greenhouse system is still low, and it cannot fully realize its potential in agricultural production. SUMMARY

[0005] The utility model embodiment provides a kind of processing circuit board for greenhouse control, to solve the problem that wired communication is used in greenhouse control system in prior art, wiring is complex and has high maintenance costs, and it is difficult to achieve remote real-time monitoring and data transmission, few expansion functions, difficult to meet the diverse needs of agricultural production, lack linkage control function with other agricultural facilities, impossible to achieve intelligent management and automated operations.

[0006] In an aspect, the embodiment of the present application provides a processing circuit board for greenhouse control, comprising:

[0007] a circuit board,

[0008] a power module arranged on the circuit board, the power module being configured to provide power supply for a master control module;

[0009] an isolation power module arranged on the circuit board, the isolation power module being configured to provide isolation power supply for an isolation communication circuit, so as to prevent external interference from affecting normal work of the power supply circuit;

[0010] a power-off backup power module arranged on the circuit board, the power-off backup power module being configured to provide power supply after abnormal power-off of the circuit;

[0011] a peripheral communication module arranged on the circuit board, the peripheral communication module being configured to form a conventional RS485 communication circuit, and the conventional RS485 communication circuit being configured to connect external devices with relatively short communication distance;

[0012] a sub-machine communication module arranged on the circuit board, the sub-machine communication module being configured to connect sub-machines with relatively long communication distance through the isolation communication circuit;

[0013] a state indication module arranged on the circuit board, the state indication module being configured to indicate the working state of the master control module through a light-emitting diode;

[0014] a storage module arranged on the circuit board, the storage module being configured to store working data required to be recorded after power-off of the control circuit system;

[0015] a display communication module arranged on the circuit board, the display communication module being configured to connect a touch display screen;

[0016] a 4G communication module arranged on the circuit board, the 4G communication module being configured to realize communication interaction between the master control module and a cloud platform;

[0017] an expansion connection module arranged on the circuit board, the expansion connection module being configured to connect peripheral devices through control of the master control module;

[0018] A main control module is arranged on the circuit board, and the main control module is configured to control the switch state of the output interface; the main control module is configured to control the switch state of the input interface; the main control module is configured to communicate with the peripheral communication module and the slave communication module through an RS485 interface; the main control module is configured to communicate with the display communication module through an RS232 interface; the main control module is configured to communicate with the physical button circuit board through an IIC interface; and the main control module is configured to save and read working data through the storage module.

[0019] The main control module is electrically connected with the peripheral communication module, the slave communication module, the state indication module, the storage module, the display communication module, the 4G communication module and the expansion connection module.

[0020] In a possible implementation, the power-off backup power supply module includes a diode D29, a diode D30 and a capacitor CB1, and is configured to provide 200 seconds of continuous power supply for the circuit after abnormal power failure of the circuit.

[0021] In a possible implementation, the peripheral communication module includes a peripheral communication chip U28, a capacitor C24 connected in series with a VCC pin of the peripheral communication chip U28, a resistor R99, a diode D25 and a resistor R101 connected in sequence with a B pin of the peripheral communication chip U28, a resistor R107, a diode D26 and a resistor R103 connected in sequence with an A pin of the peripheral communication chip U28, a resistor R102 connected in series between the resistor R99 and the resistor R107, and pins RO, RE and DI of the peripheral communication chip U28 connected in sequence with pins PB11, PE15 and PB10 of a main control chip of the main control module.

[0022] In a possible implementation, the slave communication module includes a slave communication first chip U15 and a slave communication second chip U30, pins RO and DI of the slave communication first chip U15 connected in sequence with pins VIB and VOA of the slave communication second chip U30, a resistor C25 connected in series with a VCC pin of the slave communication first chip U15, a resistor R57, a diode D33 and a resistor R108 connected in sequence with a B pin of the slave communication first chip U15, a resistor R138, a diode D34 and a resistor R1130 connected in sequence with an A pin of the slave communication second chip U30, a resistor R109 connected in series between the resistor R57 and the resistor R138, a capacitor C23 connected with a VDD1 pin of the slave communication second chip U30, a capacitor C2 connected with a VDD2 pin of the slave communication second chip U30, and pins VIA and VOB of the slave communication second chip U30 connected in sequence with pins PA2 and PA3 of the main control chip.

[0023] In a possible implementation, the state indicating module includes: an LED 12, an LED 13, and an LED 14, one end of each of the LED 12, the LED 13, and the LED 14 is connected to a resistor R53, a resistor R54, and a resistor R55 respectively, and the other end of each of the LED 12, the LED 13, and the LED 14 is connected to a pin PE0, a pin PB9, and a pin PB8 of the master control chip respectively.

[0024] In a possible implementation, the storage module includes: a storage first chip U16 and a storage second chip U1, a pin VCC of the storage first chip U16 is connected to a capacitor C5, pins SCL and SDA of the storage first chip U16 are connected to a pin PB6 and a pin PB7 of the master control chip in sequence, a pin VCC and a pin HOLD of the storage second chip U1 are connected to a capacitor C1, pins CS, SO, CLK, and SI of the storage second chip U1 are connected to a pin PB12, a pin PB14, a pin PB13, and a pin PB15 of the master control chip respectively.

[0025] In a possible implementation, the display communication module includes: a display communication chip U17, a pin V+, a pin V-, and a pin VOC of the display communication chip U17 are connected to a capacitor C8, a capacitor C9, and a capacitor C12 in sequence, a pin C2+ and a pin C2- of the display communication chip U17 are connected to a capacitor C10, a pin C1+ and a pin C1- of the display communication chip U17 are connected to a capacitor C11, a pin R1IN and a pin T1OUT of the display communication chip U17 are connected to a pin 10 and a pin 9 of an interface P6 in sequence, a pin R1OUT and a pin T1IN of the display communication chip U17 are connected to a pin PC11 and a pin PC10 of the master control chip in sequence, a pin 3 and a pin 4 of the interface P6 are connected to a pin PA8 and a pin PC9 of the master control chip in sequence, the interface P6 is used for connecting the touch display screen, and the interface P6 is also used for connecting the physical button.

[0026] In a possible implementation, the 4G communication module comprises: an interface P7 and a 4G communication chipset, pin 1 and pin 2 of the interface P7 are connected to pin PA15 and pin PA11 of the master control chip in sequence, pin 3 and pin 4 of the interface P7 are connected to pin PA9 and pin PA10 of the master control chip in sequence, pin 7 of the interface P7 is connected to pin PA12 of the master control chip, a triode Q4 is connected between pin UART0_RXD of the 4G communication chip U1A of the 4G communication chipset and pin STMTXD_GSMRXD of the interface P2, a resistor R14 is connected between the 1st contact of the Q4 and pin VDD_EXT of the 4G communication chip U1A, a resistor R10 is connected between the 3rd contact of the Q4 and pin UART0_RXD of the 4G communication chip U1A and between the resistor R14 and pin VDD_EXT of the 4G communication chip U1A, a resistor R18 is connected between the 2nd contact of the Q4 and pin STMTXD_GSMRXD of the interface P2, a resistor R8, a photodiode D1, a triode Q5 and a resistor R15 are connected in sequence between pin VBAT of the 4G communication chip U1A and pin NETLIGHT of the 4G communication chip U1A, the 2nd contact of the triode Q5 is grounded, a triode Q3 is connected between pin STMRXD_GSMTXD of the interface P2 and pin UART0_TXD of the 4G communication chip U1A, a resistor R7 is connected between pin STMRXD_GSMTXD of the interface P2 and the 3rd contact of the Q3, a resistor R11 is connected between the 1st contact of the Q3 and pin VDD_EXT of the 4G communication chip U1A, resistors R17 are connected between the 1st contact of the Q3 and the resistor R11 and between the 2nd contact of the Q3 and pin UART0_TXD of the 4G communication chip U1A, a triode Q2 and a resistor R13 are connected in sequence between pin PWR of the 4G communication chip U1A and pin GSM_PWR of the interface P2, a capacitor C10 is connected in series between pin PWR of the 4G communication chip U1A and the 2nd contact of the Q2, a triode Q1 and a resistor R12 are connected in sequence between pin RESET of the 4G communication chip U1A and pin GSM_RST of the interface P2, a capacitor C9 is connected in series between pin RESET of the 4G communication chip U1A and the 2nd contact of the Q1, pin VCC, pin RST, pin CLK and pin IO of the 4G communication chip U2 are connected to pin SIM0_VCC, pin SIM0_RST, pin SIM0_CLK and pin SIM0_DATA of the 4G communication chip U1A in sequence, a resistor R6 is connected in series between pin VCC of the 4G communication chip U2 and pin SIM0_VCC of the 4G communication chip U1A, a capacitor C7 and a capacitor C8 are connected in series between the resistor R6 and pin VCC of the 4G communication chip U2,The capacitor C7 and C8 are connected to ground, the pin SIM0 CLK of the 4G communication chip U1A and the pin CLK of the 4G communication chip U2 are provided with a resistor R5, the pin CLK of the 4G communication chip U2 is connected with the capacitor C6 between the resistor R5, the capacitor C6 is grounded, the pin SIM0_RST of the 4G communication chip U1A and the pin RST of the 4G communication chip U2 are provided with a resistor R4, the pin RST of the 4G communication chip U2 is connected with the capacitor C5 between the resistor R4, the capacitor C5 is grounded, the pin SIM0_DATA of the 4G communication chip U1A and the resistor R6 are connected with a resistor R2, the connection point of the resistor R2 and the pin SIM0_DATA of the 4G communication chip U1A and the pin IO of the 4G communication chip U2 are connected with a resistor R3, the resistor R3 and the pin IO of the 4G communication chip U2 are connected with a capacitor C4, the capacitor C4 is grounded, the pin IO, CLK, RST and VCC of the 4G communication chip U3 are connected with the pin IO, CLK, RST and VCC of the 4G communication chip U2 in turn, the pin ANT_MAIN of the 4G communication chip U1A and the coaxial connector P1 are connected with a resistor R1 in series, the resistor R1 is connected with a capacitor C1 close to the pin ANT_MAIN end of the 4G communication chip U1A, the capacitor C1 is grounded, the resistor R1 is connected with a capacitor C2 close to the coaxial connector P1 end, the capacitor C2 is grounded, the coaxial connector P1 is grounded, the pin SKP_N of the 4G communication chip U1A is connected with the pin IN- of the 4G communication chip U6 through the capacitor C27 and the resistor R26, the pin IN- of the 4G communication chip U6 and the pin VO1 of the 4G communication chip U6 are connected with a resistor R25, the pin SKP_P of the 4G communication chip U1A is connected with the pin BYPASS and IN+ of the 4G communication chip U6 through the capacitor C23, the pin 7 of the interface P2 is connected with the pin SHUTDOWN of the 4G communication chip U6, the pin 7 of the interface P2 and the pin SHUTDOWN of the 4G communication chip U6 are connected with a resistor R22.

[0027] In a possible implementation, the expansion connection module comprises an interface P21, pins 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 23, 24, 25, 26, 27, 28, 29, 31, 32, 33, 34, 35, 36, 37, 38, 39, 41, 42, 43, 44, 45, 46, 47, 48, 49 of the interface P21 are sequentially connected to pins PE2, PE3, PE4, PE5, PE6, PC13, PC0, PC1, PC2, PC3, PA0, PA1, PA4, PA5, PA6, PA7, PC4, PC5, PB0, PB1, PE7, PE8, PE9, PE10, PE11, PE12, PE13, PE14, PD8, PD9, PD10, PD11, PD12, PD13, PD14, PD15 of the master control chip, pins 52 and 51 of the interface P21 are sequentially connected to pins PC7 and PC6 of the master control chip, and a pin 8 of the interface P21 is connected to a pin PE1 of the master control chip.

[0028] The processing circuit board for greenhouse control has the following advantages:

[0029] (1) The power module, the isolation power module and the power-off backup power module ensure the safe operation of the greenhouse, and avoid production loss caused by power failure.

[0030] (2) The peripheral communication module, the slave communication module and the expansion connection module enhance the expansion components of the greenhouse control, facilitate to realize more functions, and facilitate to complete the intelligentization of the greenhouse control.

[0031] (3) The 4G communication module is connected to the cloud platform, linkage control functions with other agricultural facilities are realized, and the automatic and intelligent greenhouse control is completed. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0033] Figure 1 A master control chip circuit schematic diagram of the processing circuit board for greenhouse control provided by the embodiments of the present application;

[0034] Figure 2 A peripheral communication circuit schematic diagram of the processing circuit board for greenhouse control provided by the embodiments of the present application;

[0035] Figure 3 A sub-machine communication circuit schematic diagram of a processing circuit board for greenhouse control is provided for the embodiment of the utility model;

[0036] Figure 4 A state indication circuit schematic diagram of a processing circuit board for greenhouse control is provided for the embodiment of the utility model;

[0037] Figure 5 A storage chip U16 circuit schematic diagram of a processing circuit board for greenhouse control is provided for the embodiment of the utility model;

[0038] Figure 6 A storage chip U1 circuit schematic diagram of a processing circuit board for greenhouse control is provided for the embodiment of the utility model;

[0039] Figure 7 A display communication touch circuit schematic diagram of a processing circuit board for greenhouse control is provided for the embodiment of the utility model;

[0040] Figure 8 A display communication entity button interface schematic diagram of a processing circuit board for greenhouse control is provided for the embodiment of the utility model;

[0041] Figure 9 An extension interface circuit schematic diagram of a processing circuit board for greenhouse control is provided for the embodiment of the utility model;

[0042] Figure 10 A 4G communication chip U1A1 auxiliary circuit 1 schematic diagram of a processing circuit board for greenhouse control is provided for the embodiment of the utility model;

[0043] Figure 11 A 4G communication chip U1A1 schematic diagram of a processing circuit board for greenhouse control is provided for the embodiment of the utility model;

[0044] Figure 12 A 4G communication chip U1A1 auxiliary circuit 2 schematic diagram of a processing circuit board for greenhouse control is provided for the embodiment of the utility model;

[0045] Figure 13 A 4G communication chip U1A1 auxiliary circuit 3 schematic diagram of a processing circuit board for greenhouse control is provided for the embodiment of the utility model;

[0046] Figure 14 A 4G communication chip U1A1 auxiliary circuit 4 schematic diagram of a processing circuit board for greenhouse control is provided for the embodiment of the utility model;

[0047] Figure 15A 4G communication chip U1A1 accessory circuit 5 schematic view for processing circuit board of greenhouse control is provided for the embodiment of the utility model,

[0048] Figure 16 A 4G communication chip U2 schematic view for processing circuit board of greenhouse control is provided for the embodiment of the utility model,

[0049] Figure 17 A 4G communication chip U3 schematic view for processing circuit board of greenhouse control is provided for the embodiment of the utility model,

[0050] Figure 18 A 4G communication chip U4 schematic view for processing circuit board of greenhouse control is provided for the embodiment of the utility model,

[0051] Figure 19 A 4G communication chip U5 schematic view for processing circuit board of greenhouse control is provided for the embodiment of the utility model,

[0052] Figure 20 A 4G communication chip U6 schematic view for processing circuit board of greenhouse control is provided for the embodiment of the utility model,

[0053] Figure 21 A 4G communication interface P2 schematic view for processing circuit board of greenhouse control is provided for the embodiment of the utility model. DETAILED DESCRIPTION

[0054] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0055] Figure 1 A main control chip schematic view for processing circuit board of greenhouse control is provided for the embodiment of the utility model. The embodiment of the utility model provides a processing circuit board for greenhouse control, comprising:

[0056] Circuit board:

[0057] Power module, set up on the circuit board, the power module is used to provide power supply for main control module;

[0058] Isolation power module, set up on the circuit board, the isolation power module is used to provide isolation power supply for isolation communication circuit, prevents external interference and influences power supply circuit normal work;

[0059] A power backup module is arranged on the circuit board, and is used to supply power after abnormal power failure of the circuit.

[0060] A peripheral communication module is arranged on the circuit board, and is used to form a conventional RS485 communication circuit, which is used to connect external devices with relatively short communication distance.

[0061] A sub-machine communication module is arranged on the circuit board, and is used to connect sub-machines with relatively long communication distance through the isolation communication circuit.

[0062] A state indication module is arranged on the circuit board, and is used to indicate the working state of the master control module through a light emitting diode.

[0063] A storage module is arranged on the circuit board, and is used to store working data that needs to be recorded after power failure of the control circuit system.

[0064] A display communication module is arranged on the circuit board, and is used to connect a touch display screen.

[0065] A 4G communication module is arranged on the circuit board, and is used to realize communication interaction between the master control module and a cloud platform.

[0066] An expansion connection module is arranged on the circuit board, and is used to connect peripheral devices through control of the master control module.

[0067] A master control module is arranged on the circuit board, and is used to control the on-off state of an output interface, and is used to control the on-off state of an input interface. The master control module communicates with the peripheral communication module, the sub-machine communication module, the state indication module, the storage module, the display communication module, the 4G communication module and the expansion connection module through an RS485 interface, an RS232 interface, an IIC interface and an entity button circuit board.

[0068] The master control module is electrically connected with the peripheral communication module, the sub-machine communication module, the state indication module, the storage module, the display communication module, the 4G communication module and the expansion connection module.

[0069] In a possible embodiment, the power backup module includes a diode D29, a diode D30 and a capacitor CB1, and is used to provide 200 seconds of continuous power supply for the circuit after abnormal power failure of the circuit.

[0070] For example, diodes D29 and D30 and capacitor CB1 form a backup power supply after power failure, which can provide power for 200 seconds after abnormal power failure, so that the main control chip has enough time to backup necessary working information.

[0071] In a possible embodiment, the peripheral communication module comprises: a peripheral communication chip U28, a capacitor C24 connected in series with a VCC pin of the peripheral communication chip U28, a resistor R99, a diode D25 and a resistor R101 connected in sequence with a B pin of the peripheral communication chip U28, a resistor R107, a diode D26 and a resistor R103 connected in sequence with an A pin of the peripheral communication chip U28, a resistor R102 connected in series between the resistor R99 and the resistor R107, and a pin RO, a pin RE and a pin DI of the peripheral communication chip U28 connected in sequence with a pin PB11, a pin PE15 and a pin PB10 of the main control chip of the main control module.

[0072] For example, the chip U28 and its peripheral devices form a conventional RS485 communication circuit, which is used to connect external devices such as sensors with relatively short communication distance.

[0073] In a possible embodiment, the sub-machine communication module comprises: a sub-machine communication first chip U15 and a sub-machine communication second chip U30, a pin RO and a pin DI of the sub-machine communication first chip U15 connected in sequence with a pin VIB and a pin VOA of the sub-machine communication second chip U30, a pin VCC of the sub-machine communication first chip U15 connected in series with a resistor C25, a pin B of the sub-machine communication first chip U15 connected in sequence with a resistor R57, a diode D33 and a resistor R108, a pin A of the sub-machine communication second chip U30 connected in sequence with a resistor R138, a diode D34 and a resistor R1130, a resistor R109 connected in series between the resistor R57 and the resistor R138, a pin VDD1 of the sub-machine communication second chip U30 connected with a capacitor C23, a pin VDD2 of the sub-machine communication second chip U30 connected with a capacitor C2, and a pin VIA and a pin VOB of the sub-machine communication second chip U30 connected in sequence with a pin PA2 and a pin PA3 of the main control chip.

[0074] For example, the chips U15 and U30 and their peripheral devices form an isolated RS485 communication circuit, which is used to connect external devices such as sub-machines with relatively long communication distance.

[0075] In a possible embodiment, the state indication module comprises: an LED 12, an LED 13 and an LED 14, one end of the LED 12, the LED 13 and the LED 14 connected with a resistor R53, a resistor R54 and a resistor R55 respectively, and the other end of the LED 12, the LED 13 and the LED 14 connected with a pin PE0, a pin PB9 and a pin PB8 of the main control chip respectively.

[0076] Exemplarily, the light emitting diodes LED 12, LED 13 and LED 14 are used to indicate the working state of the system.

[0077] In a possible embodiment, the storage module comprises a storage first chip U16 and a storage second chip U1, a pin VCC of the storage first chip U16 is connected with a capacitor C5, pins SCL and SDA of the storage first chip U16 are connected with pins PB6 and PB7 of the master control chip in sequence, a pin VCC and a pin HOLD of the storage second chip U1 are connected with a capacitor C1, pins CS, SO, CLK and SI of the storage second chip U1 are connected with pins PB12, PB14, PB13 and PB15 of the master control chip respectively.

[0078] Exemplarily, the U16 and U1 are used to store the working data which needs to be recorded after the system is powered off.

[0079] In a possible embodiment, the display communication module comprises a display communication chip U17, pins V+, V- and VOC of the display communication chip U17 are connected with a capacitor C8, a capacitor C9 and a capacitor C12 in sequence, a capacitor C10 is connected between pins C2+ and C2- of the display communication chip U17, a capacitor C11 is connected between pins C1+ and C1- of the display communication chip U17, pins R1IN and T1OUT of the display communication chip U17 are connected with pins 10 and 9 of an interface P6 in sequence, pins R1OUT and T1IN of the display communication chip U17 are connected with pins PC11 and PC10 of the master control chip in sequence, pins 3 and 4 of the interface P6 are connected with pins PA8 and PC9 of the master control chip in sequence, the P6 is used to connect the touch display screen, and the P6 is also used to connect the physical button.

[0080] Exemplarily, the chip U17 and its peripheral devices constitute an RS232 communication circuit, which is used to connect the touch display screen, and the P6 is an interface for connecting the touch screen and the physical button.

[0081] In a possible implementation, the 4G communication module comprises: an interface P7 and a 4G communication chipset, pin 1 and pin 2 of the interface P7 are connected to pin PA15 and pin PA11 of the master control chip in sequence, pin 3 and pin 4 of the interface P7 are connected to pin PA9 and pin PA10 of the master control chip in sequence, pin 7 of the interface P7 is connected to pin PA12 of the master control chip, a triode Q4 is connected between pin UART0_RXD of the 4G communication chip U1A of the 4G communication chipset and pin STMTXD_GSMRXD of the interface P2, a resistor R14 is connected between the 1st contact of the Q4 and pin VDD_EXT of the 4G communication chip U1A, a resistor R10 is connected between the 3rd contact of the Q4 and pin UART0_RXD of the 4G communication chip U1A and between the resistor R14 and pin VDD_EXT of the 4G communication chip U1A, a resistor R18 is connected between the 2nd contact of the Q4 and pin STMTXD_GSMRXD of the interface P2, a resistor R8, a photodiode D1, a triode Q5 and a resistor R15 are connected in sequence between pin VBAT of the 4G communication chip U1A and pin NETLIGHT of the 4G communication chip U1A, the 2nd contact of the triode Q5 is grounded, a triode Q3 is connected between pin STMRXD_GSMTXD of the interface P2 and pin UART0_TXD of the 4G communication chip U1A, a resistor R7 is connected between pin STMRXD_GSMTXD of the interface P2 and the 3rd contact of the Q3, a resistor R11 is connected between the 1st contact of the Q3 and pin VDD_EXT of the 4G communication chip U1A, a resistor R17 is connected between the 1st contact of the Q3 and the resistor R11 and between the 2nd contact of the Q3 and pin UART0_TXD of the 4G communication chip U1A, a triode Q2 and a resistor R13 are connected in sequence between pin PWR of the 4G communication chip U1A and pin GSM_PWR of the interface P2, a capacitor C10 is connected in series between pin PWR of the 4G communication chip U1A and the 2nd contact of the Q2, a triode Q1 and a resistor R12 are connected in sequence between pin RESET of the 4G communication chip U1A and pin GSM_RST of the interface P2, a capacitor C9 is connected in series between pin RESET of the 4G communication chip U1A and the 2nd contact of the Q1, pin VCC, pin RST, pin CLK and pin IO of the 4G communication chip U2 are connected to pin SIM0_VCC, pin SIM0_RST, pin SIM0_CLK and pin SIM0_DATA of the 4G communication chip U1A in sequence, a resistor R6 is connected in series between pin VCC of the 4G communication chip U2 and pin SIM0_VCC of the 4G communication chip U1A, a capacitor C7 and a capacitor C8 are connected in series between the resistor R6 and pin VCC of the 4G communication chip U2,The capacitors C7 and C8 are connected to ground, a resistor R5 is arranged between the pin SIM0_CLK of the 4G communication chip U1A and the pin CLK of the 4G communication chip U2, a capacitor C6 is connected between the pin CLK of the 4G communication chip U2 and the resistor R5, the capacitor C6 is grounded, a resistor R4 is arranged between the pin SIM0_RST of the 4G communication chip U1A and the pin RST of the 4G communication chip U2, a capacitor C5 is connected between the pin RST of the 4G communication chip U2 and the resistor R4, the capacitor C5 is grounded, a resistor R2 is connected between the pin SIM0_DATA of the 4G communication chip U1A and the resistor R6, a resistor R3 is connected between the connection point of the pin SIM0_DATA of the 4G communication chip U1A and the pin IO of the 4G communication chip U2, a capacitor C4 is connected between the resistor R3 and the pin IO of the 4G communication chip U2, the capacitor C4 is grounded, the pins IO, CLK, RST and VCC of the 4G communication chip U3 are sequentially connected to the pins IO, CLK, RST and VCC of the 4G communication chip U2, a resistor R1 is connected in series between the pin ANT_MAIN of the 4G communication chip U1A and the coaxial connector P1, a capacitor C1 is connected to the end of the resistor R1 close to the pin ANT_MAIN of the 4G communication chip U1A, the capacitor C1 is grounded, a capacitor C2 is connected to the end of the resistor R1 close to the coaxial connector P1, the capacitor C2 is grounded, the coaxial connector P1 is grounded, the pin SKP_N of the 4G communication chip U1A is connected to the pin IN- of the 4G communication chip U6 through a capacitor C27 and a resistor R26, a resistor R25 is connected between the pin IN- of the 4G communication chip U6 and the pin VO1 of the 4G communication chip U6, the pin SKP_P of the 4G communication chip U1A is connected to the pins BYPASS and IN+ of the 4G communication chip U6 through a capacitor C23, the pin 7 of the interface P2 is connected to the pin SHUTDOWN of the 4G communication chip U6, and a resistor R22 is connected between the pin 7 of the interface P2 and the pin SHUTDOWN of the 4G communication chip U6.

[0082] P7 is an independent 4G communication module installation interface for installing a 4G communication circuit to realize communication interaction between a master control chip and a cloud platform.

[0083] In a possible embodiment, the expansion connection module comprises an interface P21, pins 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 23, 24, 25, 26, 27, 28, 29, 31, 32, 33, 34, 35, 36, 37, 38, 39, 41, 42, 43, 44, 45, 46, 47, 48, 49 of the interface P21 are connected to pins PE2, PE3, PE4, PE5, PE6, PC13, PC0, PC1, PC2, PC3, PA0, PA1, PA4, PA5, PA6, PA7, PC4, PC5, PB0, PB1, PE7, PE8, PE9, PE10, PE11, PE12, PE13, PE14, PD8, PD9, PD10, PD11, PD12, PD13, PD14, PD15 of the main control chip in sequence, pins 52 and 51 of the interface P21 are connected to pins PC7 and PC6 of the main control chip in sequence, and pin 8 of the interface P21 is connected to pin PE1 of the main control chip.

[0084] For example, P21 is an expansion connection interface, which can be connected to peripheral devices.

[0085] The main control chip is used for controlling other parts in the circuit, and the functions realized include: controlling the switch state of the output interface; collecting the switch state of the input interface; communicating with devices such as sensors and sub-machines through the RS485 interface; communicating with the touch screen through the RS232 interface; communicating with the physical button circuit board through the IIC interface; communicating with the cloud platform through the 4G module; and realizing work data saving and reading through U16 and U1.

[0086] Although the preferred embodiments of the present application have been described, those skilled in the art who know the basic inventive concept can make further changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0087] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A processing circuit board for controlling a greenhouse, characterized in that, The utility model relates to a kind of control circuit of master-slave communication, including: Circuit board: Power module is arranged on the circuit board, and the power module is used to provide power supply for master module; Isolation power module is arranged on the circuit board, and the isolation power module is used to provide isolation power supply for isolated communication circuit, to prevent external interference from affecting power supply circuit normal work; Power-off backup power module is arranged on the circuit board, and the power-off backup power module is used to power supply after circuit abnormal power failure; Peripheral communication module is arranged on the circuit board, and the peripheral communication module is used to constitute conventional RS485 communication circuit, and the conventional RS485 communication circuit is used to connect the external device of communication distance being relatively near; Sub-machine communication module is arranged on the circuit board, and the sub-machine communication module is used to connect the sub-machine of communication distance being relatively far through the isolated communication circuit; State indicating module is arranged on the circuit board, and the state indicating module is used to indicate the working state of the master module through light emitting diode; Storage module is arranged on the circuit board, and the storage module is used to store the working data that needs to be recorded after control circuit system power failure; Display communication module is arranged on the circuit board, and the display communication module is used to connect touch display screen; 4G communication module is arranged on the circuit board, and the 4G communication module is used to realize the communication interaction between the master module and cloud platform; Expansion connection module is arranged on the circuit board, and the expansion connection module is used to connect peripheral device through the control of the master module; Master module is arranged on the circuit board, and the master module is used to control the on-off state of output interface;The master module is used to control the on-off state of acquisition input interface;The master module communicates with the peripheral communication module, the sub-machine communication module through RS485 interface;The master module communicates with the display communication module through RS232 interface;The master module communicates with entity button circuit board through IIC interface;The master module realizes working data saving and reading through the storage module; The master module is electrically connected with the peripheral communication module, the sub-machine communication module, the state indicating module, the storage module, the display communication module, the 4G communication module and the expansion connection module.

2. The processing circuit board for controlling a greenhouse according to claim 1, wherein, The power-off backup power module includes diode D29, diode D30 and capacitor CB1, and the power-off backup power module provides 200 seconds of continuous power supply for circuit after circuit abnormal power failure.

3. The processing circuit board for controlling a greenhouse according to claim 1, wherein, The peripheral communication module includes peripheral communication chip U28, capacitor C24 in series with the VCC pin of the peripheral communication chip U28, resistor R99, diode D25 and resistor R101 connected with the B pin of the peripheral communication chip U28 in sequence, resistor R107, diode D26 and resistor R103 connected with the A pin of the peripheral communication chip U28 in sequence, resistor R102 in series between the resistor R99 and the resistor R107, and the pin RO, RE, DI of the peripheral communication chip U28 is connected with the pin PB11, PE15 and PB10 of the master control chip of the master module in sequence.

4. The processing circuit board for controlling a greenhouse according to claim 3, wherein, The sub-machine communication module comprises a sub-machine communication first chip U15 and a sub-machine communication second chip U30, the pins R0 and DI of the sub-machine communication first chip U15 are connected with the pins VIB and VOA of the sub-machine communication second chip U30 in sequence, the pin VCC of the sub-machine communication first chip U15 is connected with the resistor C25 in series, the pin B of the sub-machine communication first chip U15 is connected with the resistor R57, the diode D33 and the resistor R108 in sequence, the pin A of the sub-machine communication second chip U30 is connected with the resistor R138, the diode D34 and the resistor R1130 in sequence, the resistor R57 and the resistor R138 are connected with the resistor R109 in series, the pin VDD1 of the sub-machine communication second chip U30 is connected with the capacitor C23, the pin VDD2 of the sub-machine communication second chip U30 is connected with the capacitor C2, and the pins VIA and VOB of the sub-machine communication second chip U30 are connected with the pins PA2 and PA3 of the master control chip in sequence.

5. A processing circuit board for controlling a greenhouse according to claim 4, characterized in that, The state indication module comprises an LED 12, an LED 13 and an LED 14, one end of the LED 12, the LED 13 and the LED 14 is connected with the resistor R53, the resistor R54 and the resistor R55 respectively, and the other end of the LED 12, the LED 13 and the LED 14 is connected with the pins PE0, PB9 and PB8 of the master control chip respectively.

6. The processing circuit board for controlling a greenhouse according to claim 5, wherein, The storage module comprises a storage first chip U16 and a storage second chip U1, the pin VCC of the storage first chip U16 is connected with the capacitor C5, the pins SCL and SDA of the storage first chip U16 are connected with the pins PB6 and PB7 of the master control chip in sequence, the pins VCC and HOLD of the storage second chip U1 are connected with the capacitor C1, and the pins CS, SO, CLK and SI of the storage second chip U1 are connected with the pins PB12, PB14, PB13 and PB15 of the master control chip respectively.

7. The processing circuit board for controlling a greenhouse according to claim 6, wherein, The display communication module comprises a display communication chip U17, the pins V+, V- and VOC of the display communication chip U17 are connected with the capacitor C8, the capacitor C9 and the capacitor C12 in sequence, the pins C2+ and C2- of the display communication chip U17 are connected with the capacitor C10, the pins C1+ and C1- of the display communication chip U17 are connected with the capacitor C11, the pins R1IN and T1OUT of the display communication chip U17 are connected with the pins 10 and 9 of the interface P6 in sequence, the pins R1OUT and T1IN of the display communication chip U17 are connected with the pins PC11 and PC10 of the master control chip in sequence, the pins 3 and 4 of the interface P6 are connected with the pins PA8 and PC9 of the master control chip in sequence, the P6 is used for connecting the touch display screen, and the P6 is also used for connecting the physical button.

8. The processing circuit board for controlling a greenhouse according to claim 7, wherein, The 4G communication module comprises: interface P7 and 4G communication chipset, pin 1 and 2 of the interface P7 are connected with pin PA15 and PA11 of the main control chip in sequence, pin 3 and 4 of the interface P7 are connected with pin PA9 and PA10 of the main control chip in sequence, pin 7 of the interface P7 is connected with pin PA12 of the main control chip, a triode Q4 is connected between pin UART0_RXD of 4G communication chip U1A of the 4G communication chipset and pin STMTXD_GSMRXD of the interface P2, a resistor R14 is connected between the 1st contact of the Q4 and pin VDD_EXT of the 4G communication chip U1A, a resistor R10 is connected between the 3rd contact of the Q4 and pin UART0_RXD of the 4G communication chip U1A and between the resistor R14 and pin VDD_EXT of the 4G communication chip U1A, a resistor R18 is connected between the 2nd contact of the Q4 and pin STMTXD_GSMRXD of the interface P2, a resistor R8, a photoelectric diode D1, a triode Q5 and a resistor R15 are connected in sequence between pin VBAT of the 4G communication chip U1A and pin NETLIGHT of the 4G communication chip U1A, the 2nd contact of the triode Q5 is grounded, a triode Q3 is connected between pin STMRXD_GSMTXD of the interface P2 and pin UART0_TXD of the 4G communication chip U1A, a resistor R7 is connected between pin STMRXD_GSMTXD of the interface P2 and the 3rd contact of the Q3, a resistor R11 is connected between the 1st contact of the Q3 and pin VDD_EXT of the 4G communication chip U1A, a resistor R17 is connected between the 1st contact of the Q3 and the resistor R11 and between the 2nd contact of the Q3 and pin UART0_TXD of the 4G communication chip U1A, a triode Q2 and a resistor R13 are connected in sequence between pin PWR of the 4G communication chip U1A and pin GSM_PWR of the interface P2, a capacitor C10 is connected in series between pin PWR of the 4G communication chip U1A and the 2nd contact of the Q2, a triode Q1 and a resistor R12 are connected in sequence between pin RESET of the 4G communication chip U1A and pin GSM_RST of the interface P2, a capacitor C9 is connected in series between pin RESET of the 4G communication chip U1A and the 2nd contact of the Q1, pin VCC, RST, CLK and IO of the 4G communication chip U2 are connected with pin SIM0_VCC, SIM0_RST, SIM0_CLK and SIM0_DATA of the 4G communication chip U1A in sequence, a resistor R6 is connected in series between pin VCC of the 4G communication chip U2 and pin SIM0_VCC of the 4G communication chip U1A, a capacitor C7 and C8 are connected in series between the resistor R6 and pin VCC of the 4G communication chip U2, the connection of the capacitor C7 and C8 is grounded,The pin SIM0 CLK of the 4G communication chip U1A and the pin CLK of the 4G communication chip U2 are provided with a resistor R5, the pin CLK of the 4G communication chip U2 is connected with the capacitor C6 between the resistor R5, the capacitor C6 is grounded, the pin SIM0_RST of the 4G communication chip U1A and the pin RST of the 4G communication chip U2 are provided with a resistor R4, the pin RST of the 4G communication chip U2 is connected with the capacitor C5 between the resistor R4, the capacitor C5 is grounded, the pin SIM0_DATA of the 4G communication chip U1A and the resistor R6 are connected with a resistor R2, the connecting point of the resistor R2 and the pin SIM0_DATA of the 4G communication chip U1A and the pin IO of the 4G communication chip U2 are connected with a resistor R3, the resistor R3 and the pin IO of the 4G communication chip U2 are connected with a capacitor C4, the capacitor C4 is grounded, the pin IO, CLK, RST and VCC of the 4G communication chip U3 are connected with the pin IO, CLK, RST and VCC of the 4G communication chip U2 in turn, the pin ANT_MAIN of the 4G communication chip U1A and the coaxial connector P1 are connected with a resistor R1 in series, the resistor R1 is connected with a capacitor C1 close to the pin ANT_MAIN end of the 4G communication chip U1A, the capacitor C1 is grounded, the resistor R1 is connected with a capacitor C2 close to the coaxial connector P1 end, the capacitor C2 is grounded, the coaxial connector P1 is grounded, the pin SKP_N of the 4G communication chip U1A is connected with the pin IN- of the 4G communication chip U6 through the capacitor C27 and the resistor R26, the pin IN- of the 4G communication chip U6 and the pin VO1 of the 4G communication chip U6 are connected with a resistor R25, the pin SKP_P of the 4G communication chip U1A is connected with the pin BYPASS and IN+ of the 4G communication chip U6 through the capacitor C23, the pin 7 of the interface P2 is connected with the pin SHUTDOWN of the 4G communication chip U6, the pin 7 of the interface P2 and the pin SHUTDOWN of the 4G communication chip U6 are connected with a resistor R22.

9. The processing circuit board for controlling a greenhouse according to claim 8, wherein, The expansion connection module includes an interface P21, pins 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 23, 24, 25, 26, 27, 28, 29, 31, 32, 33, 34, 35, 36, 37, 38, 39, 41, 42, 43, 44, 45, 46, 47, 48, 49 of the interface P21 are connected with pins PE2, PE3, PE4, PE5, PE6, PC13, PC0, PC1, PC2, PC3, PA0, PA1, PA4, PA5, PA6, PA7, PC4, PC5, PB0, PB1, PE7, PE8, PE9, PE10, PE11, PE12, PE13, PE14, PD8, PD9, PD10, PD11, PD12, PD13, PD14, PD15 of the main control chip in sequence, pins 52 and 51 of the interface P21 are connected with pins PC7 and PC6 of the main control chip in sequence, and pin 8 of the interface P21 is connected with pin PE1 of the main control chip.

Images