Circuit compatible with multiple communication protocols

Abstract

The utility model discloses a circuit compatible with various communication protocols. The circuit mainly comprises a main control chip, a selection switch, a first communication module, a second communication module and a third communication module. The main control chip and the first communication module are designed on the same mainboard, and communication can be achieved by operating the selection switch to select the first communication module to be connected with the main control chip. According to the other selection of the selection switch, the main control chip is connected with the second communication module and the third communication module at the same time, the second communication module and the third communication module both adopt independent small board design and are connected with the main board in an inserting mode, and in order to save the area of the main board and expand the use space upwards, the main control chip is connected with the second communication module and the third communication module. The second communication module and the third communication module share the same plugging space, namely, one of the second communication module and the third communication module is selected to communicate with the main control chip through selective installation. The scheme also has the advantages of simple structure, convenience in operation and easiness in implementation.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic power generation technical field especially relates to a kind of multi-protocol compatible circuit for the networking communication of NCU and TCU in photovoltaic power generation engineering. BACKGROUND

[0002] In photovoltaic power generation engineering, TCU (sun-tracking controller / tracking support / support controller) is used to control photovoltaic panel (installed on support) rotation, so that it obtains the control device of maximum power generation, and NCU is the intelligent communication box (TCU host computer) of control many TCU.Generally, in photovoltaic power generation engineering, a NCU can control dozens, hundreds, even thousands of TCU equipment, and different communication / networking protocols need to be selected according to actual situation in different engineering, and the maximum capacity of different communication protocol networking nodes is also different.In existing circuit design, a communication protocol is usually designed for networking in a certain engineering, and such design has poor anti-interference ability and insufficient flexibility, and cannot be quickly switched when switching networking protocol.

[0003] Therefore, the prior art needs to be further improved and perfected. INVENTION CONTENTS

[0004] The utility model aims at overcoming the insufficient of prior art, provide a kind of multi-protocol compatible circuit for the networking communication of NCU and TCU in photovoltaic power generation engineering.

[0005] The utility model aims at overcoming the insufficient of prior art, provide a kind of multi-protocol compatible circuit for the networking communication of NCU and TCU in photovoltaic power generation engineering.

[0006] A kind of circuit compatible multiple communication protocols, it mainly includes main control chip, selection switch, first communication module, second communication module and third communication module.The main control chip is connected with first communication module, second communication module or third communication module by selection switch.The selection switch is connected with first communication module, second communication module or third communication module by control line connection or disconnection.The first communication module and main control chip are designed on mainboard, second communication module and third communication module are all designed with independent small board, and are connected with the circuit board where main control chip is located by plug-in interface mode.The line that second communication module and third communication module are connected with main control chip uses partial multiplexing design.Second communication module and third communication module share same plug-in space on mainboard, and are installed selectively.

[0007] Specifically, the second end and the fifth end of the selection switch are connected with the main control chip, the first end and the fourth end are connected with the second communication module and the third communication module respectively, and the third end and the sixth end are connected with the first communication module.The second end is connected with the first end or the third end by operating the selection switch, and the fifth end is connected with the fourth end or the sixth end at the same time.

[0008] As a preferred scheme of the utility model, the first communication module mainly includes first chip, first terminal, first fuse, second fuse, first to fifth resistance, first capacitor, first diode, second diode and first triode.

[0009] Specifically, the first end of the first chip is connected with the sixth end of the selection switch, the second end is connected with the third end and the collector of the first triode, and is connected to the 3.3V voltage end through the first resistance in series, the fourth end is connected with the third end of the selection switch, is connected to the 3.3V voltage end through the second resistance in series, is connected to the base of the first triode through the third resistance in series, the fifth end is grounded, the sixth end is connected to the first end of the first terminal through the first fuse, is connected to the 5V voltage end through the fourth resistance in series, and is grounded through the first diode, the seventh end is connected to the second end of the first terminal through the second fuse, is grounded through the fifth resistance, and is grounded through the second diode, the eighth end is connected with the 3.3V voltage end.The emitter of the first triode is grounded. The 3.3V voltage end is grounded through the first capacitor.

[0010] As a preferred scheme of the utility model, the second communication module mainly includes second communication small plate, second terminal, third terminal, sixth resistance, seventh resistance and second triode.

[0011] Specifically, the second terminal is welded on the mainboard, the first end is grounded, the second end is connected with the 5V voltage end, the third end is connected with the first end of the selection switch, and is connected with the 3.3V voltage end through the sixth resistance, the fourth end is connected with the fourth end of the selection switch, and the fifth end is connected with the collector of the second triode. The base of the second triode is connected with the master control chip and the third communication module through the seventh resistance, and the emitter is grounded. The third terminal is welded on the mainboard, and the sixth end is connected with the master control chip. The second communication small plate is inserted on the second terminal and the third terminal, and is connected with the master control chip through the two terminals.

[0012] As a preferred scheme of the utility model, the third communication module includes third communication small plate, fourth terminal, eighth resistance, ninth resistance, tenth resistance and second capacitor.

[0013] Specifically, the fourth terminal is welded on the mainboard, the first end is grounded through the eighth resistance, the second end is connected with the master control chip and the second communication module through the ninth resistance, the third end is connected with the first end of the selection switch, the fourth end is connected with the fourth end of the selection switch, the fifth end is connected with the master control chip through the tenth resistance, the sixth end is connected with the 5V voltage end, and is grounded through the second capacitor, and the seventh to tenth ends are grounded. The third communication small plate is inserted on the fourth terminal, and is connected with the master control chip through the fourth terminal.

[0014] As a preferred scheme of the utility model, the first diode and the second diode both adopt transient suppression diode.

[0015] As a preferred scheme of the utility model, the first communication module adopts the module of RS485 communication protocol.

[0016] As a preferred scheme of the utility model, the second communication module adopts the module of Zigbee communication protocol.

[0017] As a preferred scheme of the utility model, the third communication module adopts the module of Lora communication protocol.

[0018] The working process and principle of the utility model are: the main control chip and the first communication module are designed on the same mainboard, and communication can be realized by selecting the first communication module and the main control chip connection through the operation selection switch.The other selection of the selection switch is that the main control chip is connected with the second communication module and the third communication module simultaneously, since the second communication module and the third communication module both adopt independent small plate design, and are connected with the mainboard through plug-in mode, and in order to save the mainboard area, the upward expansion space is used, the second communication module and the third communication module share the same plug-in space, that is, the second communication module and the third communication module realize the communication with the main control chip by selective installation.The scheme also has the advantages of simple structure, convenient operation and easy implementation.

[0019] Compared with the prior art, the utility model also has the following advantages:

[0020] (1) the circuit compatible with multiple communication protocols provided by the utility model adopts selection switch to select the first communication module and the second communication module or the third communication module, so as to compatible with three communication protocols, so as to be suitable for more different occasions.

[0021] (2) the circuit compatible with multiple communication protocols provided by the utility model utilizes the partial reuse of the pins between the second communication module and the third communication module, so as to save the pin resources of the main control chip, and improve the utilization rate of the main control chip.

[0022] (3) the circuit compatible with multiple communication protocols provided by the utility model designs the second communication module and the third communication module on the same plug-in space, and utilizes the vertical space to further reduce the occupied area of the mainboard, and optimizes the internal space. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 It is the selection switch circuit principle drawing of the circuit compatible with multiple communication protocols provided by the utility model.

[0024] Fig. 2This is a schematic diagram of the first communication module circuit of the circuit that is compatible with multiple communication protocols provided by this utility model.

[0025] Fig. 3 This is a schematic diagram of the second communication module circuit of the circuit that is compatible with multiple communication protocols provided by this utility model.

[0026] Fig. 4 This is the current schematic diagram of the third communication module of the circuit that is compatible with multiple communication protocols provided by this utility model.

[0027] Explanation of the reference numerals in the above figures:

[0028] S1 - Selector switch, U1 - First chip, J1 - First terminal, F1 - First fuse, F2 - Second fuse, R1 to R5 - First to fifth resistors, C1 - First capacitor, D1 - First diode, D2 - Second diode, Q1 - First transistor; J2 - Second terminal, J3 - Third terminal, R6 - Sixth resistor, R7 - Seventh resistor, Q2 - Second transistor; J4 - Fourth terminal, R8 - Eighth resistor, R9 - Ninth resistor, R10 - Tenth resistor, C2 - Second capacitor. Detailed Implementation

[0029] 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.

[0030] Example 1:

[0031] like Figs. 1 to 4 As shown, this embodiment discloses a circuit compatible with multiple communication protocols, mainly including a main control chip, a selection switch S1, a first communication module, a second communication module, and a third communication module. The main control chip is connected to the first communication module, the second communication module, or the third communication module via the selection switch S1. The selection switch S1 controls the connection of the main control chip to the first communication module, or to both the second and third communication modules by turning the control circuit on or off. The first communication module and the main control chip are designed on the motherboard, while the second and third communication modules are designed as independent small boards, connected to the circuit board containing the main control chip via plug-in interfaces. The lines connecting the second and third communication modules to the main control chip use a partially multiplexed design. The second and third communication modules share the same plug-in space on the motherboard, and only one can be installed at a time.

[0032] Specifically, the second end and the fifth end of the selection switch S1 are connected with the master control chip, the first end and the fourth end are connected with the second communication module and the third communication module respectively, and the third end and the sixth end are connected with the first communication module.

[0033] As a preferred scheme of the utility model, the first communication module mainly comprises a first chip U1, a first terminal J1, a first fuse F1, a second fuse F2, first to fifth resistors R1 to R5, a first capacitor C1, a first diode D1, a second diode D2 and a first triode Q1.

[0034] Specifically, the first end of the first chip U1 is connected with the sixth end of the selection switch S1, the second end and the third end are connected with the collector of the first triode Q1, are connected to the 3.3V voltage end through the first resistor R1 in series, the fourth end is connected with the third end of the selection switch S1, is connected to the 3.3V voltage end through the second resistor R2 in series, is connected to the base of the first triode Q1 through the third resistor R3 in series, the fifth end is grounded, the sixth end is connected to the first end of the first terminal J1 through the first fuse F1, is connected to the 5V voltage end through the fourth resistor R4 in series, is grounded through the first diode D1, the seventh end is connected to the second end of the first terminal J1 through the second fuse F2, is grounded through the fifth resistor R5, is grounded through the second diode D2, and the eighth end is connected with the 3.3V voltage end. The emitter of the first triode Q1 is grounded. The 3.3V voltage end is grounded through the first capacitor C1.

[0035] As a preferred scheme of the utility model, the second communication module mainly comprises a second communication small plate, a second terminal J2, a third terminal J3, a sixth resistor R6, a seventh resistor R7 and a second triode Q2.

[0036] Specifically, the second terminal J2 is welded on the mainboard, the first end is grounded, the second end is connected with the 5V voltage end, the third end is connected with the first end of the selection switch S1, and is connected with the 3.3V voltage end through the sixth resistor R6 at the same time, the fourth end is connected with the fourth end of the selection switch S1, and the fifth end is connected with the collector of the second triode Q2. The base of the second triode Q2 is connected with the master control chip and the third communication module through the seventh resistor R7, and the emitter is grounded. The third terminal J3 is welded on the mainboard, and the sixth end is connected with the master control chip. The second communication small plate is inserted on the second terminal J2 and the third terminal J3, and is connected with the master control chip through the two terminals.

[0037] As a preferred scheme of the utility model, the third communication module comprises a third communication small plate, a fourth terminal J4, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10 and a second capacitor C2.

[0038] Specifically, the fourth terminal J4 is welded on the main board, the first end is grounded through the eighth resistor R8, the second end is connected with the master control chip and the second communication module through the ninth resistor R9, the third end is connected with the first end of the selection switch S1, the fourth end is connected with the fourth end of the selection switch S1, the fifth end is connected with the master control chip through the tenth resistor R10, the sixth end is connected with the 5V voltage end, and is grounded through the second capacitor C2, and the seventh to tenth ends are grounded. The third communication small board is plugged on the fourth terminal J4 and connected with the master control chip through the fourth terminal J4.

[0039] As a preferred scheme of the utility model, the first diode D1 and the second diode D2 are both transient suppression diodes.

[0040] As a preferred scheme of the utility model, the first communication module is a module adopting RS485 communication protocol.

[0041] As a preferred scheme of the utility model, the second communication module is a module adopting Zigbee communication protocol.

[0042] As a preferred scheme of the utility model, the third communication module is a module adopting Lora communication protocol.

[0043] The working process and principle of the utility model are as follows: the master control chip and the first communication module are designed on the same main board, and communication can be realized by selecting the first communication module and the master control chip to be connected through the operation of the selection switch S1. Another selection of the selection switch S1 is that the master control chip is connected with the second communication module and the third communication module at the same time, since the second communication module and the third communication module are both designed as independent small boards and are connected with the main board through plugging, and in order to save the area of the main board and expand the use space upwardly, the second communication module and the third communication module share the same plugging space, that is, the second communication module and the third communication module are selectively installed to realize that one of them is connected with the master control chip for communication. The scheme also has the advantages of simple structure, convenient operation and easy implementation.

[0044] The above embodiment is a preferred implementation manner of the utility model, but the implementation manner of the utility model is not limited by the above embodiment, and any change, modification, replacement, combination and simplification made without departing from the spirit and principle of the utility model should be equivalent replacement manner and should be included in the protection scope of the utility model.

Claims

1. A circuit compatible with a plurality of communication protocols, characterized in that, The application relates to a communication module, which comprises a main control chip, a selection switch, a first communication module, a second communication module and a third communication module; the main control chip is connected with the first communication module, the second communication module or the third communication module through the selection switch; the selection switch is connected with the first communication module, the second communication module or the third communication module through a control line; the first communication module and the main control chip are designed on a mainboard; the second communication module and the third communication module are independently designed as small plates and are connected with the main control chip through a plug-in interface; the lines connecting the second communication module and the third communication module with the main control chip are designed by using partial multiplexing; the second communication module and the third communication module share the same plug-in space on the mainboard and are installed alternatively. The second end and the fifth end of the selection switch are connected with the main control chip, the first end and the fourth end are connected with the second communication module and the third communication module respectively, and the third end and the sixth end are connected with the first communication module; the selection switch is operated to control the connection between the second end and the first end or the third end, and to control the connection between the fifth end and the fourth end or the sixth end.

2. The multi-communication protocol compatible circuit according to claim 1, wherein, The first communication module comprises a first chip, a first terminal, a first fuse, a second fuse, first to fifth resistors, a first capacitor, a first diode, a second diode and a first triode. The first end of the first chip is connected with the sixth end of the selection switch, the second end is connected with the third end and the collector of the first triode, is connected with the 3.3V voltage end through a first resistor, is connected with the third end of the selection switch through a fourth resistor, is connected with the 3.3V voltage end through a third resistor and is connected with the base of the first triode, the fifth end is grounded, the sixth end is connected with the first end of the first terminal through a first fuse, is connected with the 5V voltage end through a fourth resistor and is grounded through a first diode, the seventh end is connected with the second end of the first terminal through a second fuse, is grounded through a fifth resistor and is grounded through a second diode, and the eighth end is connected with the 3.3V voltage end; the emitter of the first triode is grounded; and the 3.3V voltage end is grounded through the first capacitor.

3. The multi-communication protocol compatible circuit of claim 1, wherein, The second communication module comprises a second communication small plate, a second terminal, a third terminal, a sixth resistor, a seventh resistor and a second triode. The second terminal is welded on the mainboard, the first end is grounded, the second end is connected with the 5V voltage end, the third end is connected with the first end of the selection switch and is connected with the 3.3V voltage end through a sixth resistor, the fourth end is connected with the fourth end of the selection switch, and the fifth end is connected with the collector of the second triode; the base of the second triode is connected with the main control chip and the third communication module through a seventh resistor and is grounded; the third terminal is welded on the mainboard and the sixth end is connected with the main control chip; the second communication small plate is plugged in the second terminal and the third terminal and is connected with the main control chip through the two terminals.

4. The multi-communication protocol compatible circuit of claim 1, wherein, The third communication module comprises a third communication small plate, a fourth terminal, an eighth resistor, a ninth resistor, a tenth resistor and a second capacitor. The fourth terminal is welded on the main plate, the first end of which is grounded through the eighth resistance, the second end is connected with the main control chip and the second communication module through the ninth resistance, the third end is connected with the first end of the selection switch, the fourth end is connected with the fourth end of the selection switch, the fifth end is connected with the main control chip through the tenth resistance, the sixth end is connected with the 5V voltage end, and is grounded through the second capacitor at the same time, and the seventh to tenth ends are grounded; the third communication module is plugged on the fourth terminal and is connected with the main control chip through the fourth terminal.

5. The multi-communication protocol compatible circuit of claim 2, wherein, The first diode and the second diode are both transient suppression diodes.

6. The multi-communication protocol compatible circuit of claim 1, wherein, The first communication module is a module adopting RS485 communication protocol.

7. The multi-communication protocol compatible circuit of claim 1, wherein, The second communication module is a module adopting Zigbee communication protocol.

8. The multi-communication protocol compatible circuit of claim 1, wherein, The third communication module is a module adopting Lora communication protocol.

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