Rapid switching circuit of positioning system

Abstract

The utility model discloses a rapid switching circuit of a positioning system. The rapid switching circuit mainly comprises a main control chip, a selection switch, a first positioning unit, a second positioning unit and an on-board debugging unit. During normal use, the selection switch is operated, so that the main control chip is connected with the first positioning unit, and the main control chip controls the first triode to be conducted to supply power to the first positioning unit. When switching to the second positioning unit is needed, only the positioning small plate needs to be inserted into the connecting terminal, the selection switch is operated at the same time, so that a circuit between the main control chip and the second positioning unit is connected, the main control chip turns on the third triode, power is supplied to the positioning small plate, and then switching between the two sets of positioning systems can be achieved. When needed, the main control chip can be debugged and tested through the on-board debugging unit so as to ensure smooth and stable switching of the positioning system. The device has the advantages of being simple in structure, convenient to operate and easy to implement.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic power generation technology, and in particular to a circuit for a rapid switching positioning system in photovoltaic power generation projects. Background Technology

[0002] In photovoltaic power generation projects, the NCU (Intelligent Communication Unit) needs to obtain the geographic location (latitude and longitude information) of the site to match approximate configuration information, such as the rotation range of the tracking bracket, sunrise / sunset time, climate characteristics, temperature range, humidity range, wind range, and other environmental information. Existing circuit designs typically only include circuits for one positioning system. This design approach suffers from poor anti-interference capabilities and insufficient flexibility. When switching to another positioning system is required due to human factors (such as politics, war, sanctions, etc.) or other factors (poor signal, strong interference, positioning chip problems, etc.), it cannot be done quickly.

[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 circuit for a rapid switching positioning system in photovoltaic power generation projects.

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

[0006] A positioning system fast switching circuit mainly includes a main control chip, a selection switch, a first positioning unit, a second positioning unit, and an on-board debugging unit.

[0007] Specifically, the main control chip is connected to either the first or second positioning unit via a selection switch. The on-board debugging unit is connected to the main control chip. The main control chip, selection switch, first positioning unit, and on-board debugging unit are all mounted on the motherboard. The second positioning unit adopts an independent small board design and is connected to the selection switch by plugging it into the motherboard. The second positioning unit is plugged into the first positioning unit and shares pins of the main control chip with several lines of the first positioning unit.

[0008] Specifically, the second and fifth terminals of the selection switch are connected to the main control chip, the first and fourth terminals are connected to the first positioning unit, and the third and sixth terminals are connected to the second positioning unit. The main control chip selects whether the second terminal is connected to the first or third terminal, and simultaneously selects whether the fifth terminal is connected to the fourth or sixth terminal, via the selection switch.

[0009] As a preferred embodiment of this utility model, the first positioning unit mainly includes a first chip, first to fourth resistors, a first capacitor, a first inductor, a first light-emitting diode, and an antenna terminal. The first chip is model NEO-7M-0-00.

[0010] Specifically, the third terminal of the first chip is connected in series with a first resistor and a first light-emitting diode to a 3.3V voltage terminal; the seventh terminal is connected to signal ground; the eighth and ninth terminals are connected and connected in series with the antenna terminal through a second resistor and a first inductor; the tenth, twelfth, and thirteenth terminals are connected to signal ground; the eleventh terminal is connected to the antenna terminal; the fourteenth terminal is connected to signal ground through a third resistor; the twentieth terminal is connected to the first terminal of the selector switch; the twenty-first terminal is connected to the fourth terminal of the selector switch; the twenty-third terminal is connected to the 3.3V voltage terminal; and it is also connected to the twenty-fourth terminal and signal ground through a first capacitor. The antenna terminal is connected to signal ground. Signal ground is grounded through a fourth resistor.

[0011] As a preferred embodiment of the present invention, the first positioning unit further includes a first transistor, a second transistor, and a fifth to an eighth resistor.

[0012] Specifically, the drain of the first transistor is connected to the twenty-third terminal of the first chip, the source is connected to the 3.3V voltage terminal through the fifth resistor, and the gate is connected to the collector of the second transistor. The collector of the second transistor is connected to the source of the first transistor through the sixth resistor, the base is connected to the main control chip through the seventh resistor, the emitter is connected to the base through the eighth resistor, and the emitter is grounded.

[0013] In a preferred embodiment of this invention, the second positioning unit mainly includes a positioning plate, a connecting terminal, and a second capacitor. The connecting terminal is soldered onto the main board and located on one side of the first positioning unit. Its first end is connected to the GPS_3.3V_A voltage terminal and is grounded through the second capacitor. Its second end is also grounded. Its third end is connected to the third terminal of the selector switch, and its fourth end is connected to the sixth terminal of the selector switch. The positioning plate is inserted into the connecting terminal and installed above the first positioning unit.

[0014] As a preferred embodiment of the present invention, the second positioning unit further includes a third transistor, a fourth transistor, and ninth to twelfth resistors.

[0015] Specifically, the drain of the third transistor is connected to the first terminal of the connection terminal, the source is connected to the 3.3V voltage terminal through the ninth resistor, and the gate is connected to the collector of the fourth transistor. The collector of the fourth transistor is connected to the source of the third transistor through the tenth resistor, the base is connected to the main control chip through the eleventh resistor, the emitter is connected to the base through the twelfth resistor, and the emitter is grounded.

[0016] As a preferred embodiment of this utility model, the debugging unit on the board mainly includes a second chip, a first terminal, a second terminal, a first fuse, a second fuse, a first diode, a second diode, thirteenth to fifteenth resistors, and a third capacitor. The second chip is model SN65HVD11DR.

[0017] Specifically, the first terminal of the second chip is connected to the main control chip, the second terminal is connected to the third terminal, and also connected to the main control chip through the thirteenth resistor. The fourth terminal is connected to the main control chip. The fifth terminal is grounded. The sixth terminal is connected to one end of the first terminal and one end of the second terminal through the first fuse, and is also connected to the 5V voltage terminal through the fourteenth resistor, and is also grounded through the first diode. The seventh terminal is connected to the other end of the first terminal and the other end of the second terminal through the second fuse, and is also grounded through the fifteenth resistor, and is also grounded through the second diode. The eighth terminal is connected to the 3.3V voltage terminal. The 3.3V voltage terminal is grounded through the third capacitor.

[0018] As a preferred embodiment of this utility model, the first transistor is a P-channel field-effect transistor, and the second transistor is an NPN transistor.

[0019] As a preferred embodiment of this utility model, the third transistor is a P-channel field-effect transistor, and the fourth transistor is an NPN transistor.

[0020] As a preferred embodiment of this utility model, the first positioning unit and the second positioning unit adopt one of the following: the US Global Positioning System (GPS), the Russian GLONASS satellite navigation and positioning system, the European Galileo satellite navigation and positioning system, and the Chinese BeiDou satellite navigation system (BDS).

[0021] The working process and principle of this utility model are as follows: During normal use, operating the selection switch connects the main control chip to the first positioning unit, and the main control chip controls the first transistor to conduct and supply power to the first positioning unit. When switching to the second positioning unit is required, simply plug the positioning board into the connection terminal, and simultaneously operate the selection switch to connect the circuit between the main control chip and the second positioning unit. The main control chip then turns on the third transistor, supplying power to the positioning board, thus realizing the switching between the two positioning systems. If necessary, the main control chip can be debugged and tested through the debugging unit on the board to ensure smooth and stable switching of the positioning system. This utility model has the advantages of simple structure, convenient operation, and easy implementation.

[0022] Compared with the prior art, the present invention also has the following advantages:

[0023] (1) The positioning system quick switching circuit provided by this utility model is introduced into the second positioning system by plugging in. It does not require replacing the motherboard or redesigning, board making, soldering, burning, testing and other work. The positioning system can be switched in just a few simple steps, which significantly shortens the time required to switch the system and greatly improves the switching efficiency.

[0024] (2) The positioning system fast switching circuit provided by this utility model adopts a dual positioning system independent power supply design, and uses transistors to control the power supply of the two systems, which can reduce the power supply of unnecessary components and reduce energy consumption.

[0025] (3) The positioning system fast switching circuit provided by this utility model shares a pair of communication pins of the main control chip, which can effectively improve the utilization rate of the pin resources of the main control chip, and at the same time expand the function of the external circuit, saving resources while increasing its value. Attached Figure Description

[0026] Figure 1 This is a partial circuit diagram of the first positioning unit provided by this utility model.

[0027] Figure 2 This is the circuit diagram of the selector switch provided by this utility model.

[0028] Figure 3 This is a circuit diagram of the power supply section of the first positioning unit provided by this utility model.

[0029] Figure 4 This is a partial current schematic diagram of the second positioning unit provided by this utility model.

[0030] Figure 5 This is a circuit diagram of the power supply section of the second positioning unit provided by this utility model.

[0031] Figure 6 This is the circuit diagram of the on-board debugging unit provided by this utility model.

[0032] Explanation of the reference numerals in the above figures:

[0033] S1 - Selector switch, U1 - First chip, R1 to R4 - First to fourth resistors, C1 - First capacitor, L1 - First inductor, LED1 - First light-emitting diode, J1 - Antenna terminal; Q1 - First transistor, Q2 - Second transistor, R5 to R8 - Fifth to eighth resistors; J2 - Connection terminal, C2 - Second capacitor; Q3 - Third transistor, Q4 - Fourth transistor, R9 to R12 - Ninth to twelfth resistors; U2 - Second chip, P1 - First terminal, P2 - Second terminal, F1 - First fuse, F2 - Second fuse, D1 - First diode, D2 - Second diode, R13 to R15 - Thirteenth to fifteenth resistors, C3 - Third capacitor. Detailed Implementation

[0034] 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.

[0035] Example 1:

[0036] like Figures 1 to 6 As shown, this embodiment discloses a positioning system fast switching circuit, which mainly includes a main control chip, a selection switch S1, a first positioning unit, a second positioning unit, and an on-board debugging unit.

[0037] Specifically, the main control chip is connected to either the first or second positioning unit via a selection switch S1. The on-board debugging unit is connected to the main control chip. The main control chip, selection switch S1, first positioning unit, and on-board debugging unit are all mounted on the motherboard. The second positioning unit uses an independent small board, which is connected to the selection switch S1 by plugging it into the motherboard. The second positioning unit is plugged into the first positioning unit and shares pins of the main control chip with several lines of the first positioning unit.

[0038] Specifically, the second and fifth terminals of the selection switch S1 are connected to the main control chip, the first and fourth terminals are connected to the first positioning unit, and the third and sixth terminals are connected to the second positioning unit. The main control chip selects whether the second terminal is connected to the first or third terminal, and simultaneously selects whether the fifth terminal is connected to the fourth or sixth terminal, through the selection switch S1.

[0039] As a preferred embodiment of this utility model, the first positioning unit mainly includes a first chip U1, first to fourth resistors R1 to R4, a first capacitor C1, a first inductor L1, a first light-emitting diode LED1, and an antenna terminal J1. The first chip U1 is model NEO-7M-0-00.

[0040] Specifically, the third terminal of the first chip U1 is connected in series with the first resistor R1 and the first light-emitting diode LED1 to the 3.3V voltage terminal; the seventh terminal is connected to signal ground; the eighth and ninth terminals are connected in series with the antenna terminal J1 through the second resistor R2 and the first inductor L1; the tenth, twelfth, and thirteenth terminals are connected to signal ground; the eleventh terminal is connected to the antenna terminal J1; the fourteenth terminal is connected to signal ground through the third resistor R3; the twentieth terminal is connected to the first terminal of the selector switch S1; the twenty-first terminal is connected to the fourth terminal of the selector switch S1; the twenty-third terminal is connected to the 3.3V voltage terminal; and the twenty-fourth terminal is also connected to the signal ground through the first capacitor C1. The antenna terminal J1 is connected to signal ground. The signal ground is grounded through the fourth resistor R4.

[0041] As a preferred embodiment of the present invention, the first positioning unit further includes a first transistor Q1, a second transistor Q2, and fifth to eighth resistors R5 to R8.

[0042] Specifically, the drain of the first transistor Q1 is connected to the twenty-third terminal of the first chip U1, the source is connected to the 3.3V voltage terminal through the fifth resistor R5, and the gate is connected to the collector of the second transistor Q2. The collector of the second transistor Q2 is connected to the source of the first transistor Q1 through the sixth resistor R6, the base is connected to the main control chip through the seventh resistor R7, the emitter is connected to the base through the eighth resistor R8, and the emitter is grounded.

[0043] In a preferred embodiment of this invention, the second positioning unit mainly includes a positioning plate, a connecting terminal J2, and a second capacitor C2. The connecting terminal J2 is soldered onto the main board and located on one side of the first positioning unit. Its first end is connected to the GPS_3.3V_A voltage terminal and is grounded through the second capacitor C2. Its second end is grounded, its third end is connected to the third end of the selector switch S1, and its fourth end is connected to the sixth end of the selector switch S1. The positioning plate is inserted into the connecting terminal J2 and installed above the first positioning unit.

[0044] As a preferred embodiment of the present invention, the second positioning unit further includes a third transistor Q3, a fourth transistor Q4, and ninth to twelfth resistors R9 to R12.

[0045] Specifically, the drain of the third transistor Q3 is connected to the first terminal of the connection terminal J2, the source is connected to the 3.3V voltage terminal through the ninth resistor R9, and the gate is connected to the collector of the fourth transistor Q4. The collector of the fourth transistor Q4 is connected to the source of the third transistor Q3 through the tenth resistor R10, the base is connected to the main control chip through the eleventh resistor R11, the emitter is connected to the base through the twelfth resistor R12, and the emitter is grounded.

[0046] As a preferred embodiment of this utility model, the debugging unit on the board mainly includes a second chip U2, a first terminal P1, a second terminal P2, a first fuse F1, a second fuse F2, a first diode D1, a second diode D2, thirteenth to fifteenth resistors R13 to R15, and a third capacitor C3. The model of the second chip U2 is SN65HVD11DR.

[0047] Specifically, the first terminal of the second chip U2 is connected to the main control chip, the second terminal is connected to the third terminal, and is also connected to the main control chip through the thirteenth resistor R13. The fourth terminal is connected to the main control chip, the fifth terminal is grounded, the sixth terminal is connected to one end of the first terminal P1 and one end of the second terminal P2 through the first fuse F1, and is also connected to the 5V voltage terminal through the fourteenth resistor R14, and is also grounded through the first diode D1, the seventh terminal is connected to the other end of the first terminal P1 and the other end of the second terminal P2 through the second fuse F2, and is also grounded through the fifteenth resistor R15, and is also grounded through the second diode D2, the eighth terminal is connected to the 3.3V voltage terminal. The 3.3V voltage terminal is grounded through the third capacitor C3.

[0048] As a preferred embodiment of this utility model, the first transistor Q1 is a P-channel field-effect transistor, and the second transistor Q2 is an NPN transistor.

[0049] As a preferred embodiment of this utility model, the third transistor Q3 is a P-channel field-effect transistor, and the fourth transistor Q4 is an NPN transistor.

[0050] As a preferred embodiment of this utility model, the first positioning unit and the second positioning unit adopt one of the following: the US Global Positioning System (GPS), the Russian GLONASS satellite navigation and positioning system, the European Galileo satellite navigation and positioning system, and the Chinese BeiDou satellite navigation system (BDS).

[0051] The working process and principle of this utility model are as follows: During normal use, operating the selection switch S1 connects the main control chip to the first positioning unit, and the main control chip controls the first transistor Q1 to conduct and supply power to the first positioning unit. When switching to the second positioning unit is required, simply plug the positioning board into the connection terminal J2, and simultaneously operate the selection switch S1 to connect the circuit between the main control chip and the second positioning unit. The main control chip then turns on the third transistor Q3, supplying power to the positioning board, thus realizing the switching between the two positioning systems. If necessary, the main control chip can be debugged and tested through the debugging unit on the board to ensure smooth and stable switching of the positioning system. This utility model has the advantages of simple structure, convenient operation, and easy implementation.

[0052] 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 fast switching circuit for a positioning system, characterized in that, It includes a main control chip, a selection switch, a first positioning unit, a second positioning unit, and an on-board debugging unit; The main control chip is connected to the first positioning unit or the second positioning unit via a selection switch; the on-board debugging unit is connected to the main control chip; the main control chip, the selection switch, the first positioning unit, and the on-board debugging unit are all mounted on the motherboard; the second positioning unit adopts an independent small board design and is connected to the selection switch by plugging it into the motherboard; the second positioning unit is plugged into the top of the first positioning unit and shares pins of the main control chip with several lines of the first positioning unit; The second and fifth terminals of the selection switch are respectively connected to the main control chip, the first and fourth terminals are respectively connected to the first positioning unit, and the third and sixth terminals are respectively connected to the second positioning unit. The main control chip selects whether the second terminal is connected to the first or third terminal, and at the same time selects whether the fifth terminal is connected to the fourth or sixth terminal, through the selection switch.

2. The positioning system fast switching circuit according to claim 1, characterized in that, The first positioning unit includes a first chip, first to fourth resistors, a first capacitor, a first inductor, a first light-emitting diode, and an antenna terminal; the first chip is model NEO-7M-0-00; The third terminal of the first chip is connected in series with the first resistor and the first light-emitting diode to the 3.3V voltage terminal. The seventh terminal is connected to the signal ground. The eighth and ninth terminals are connected in series with the antenna terminal through the second resistor and the first inductor. The tenth, twelfth, and thirteenth terminals are connected to the signal ground. The eleventh terminal is connected to the antenna terminal. The fourteenth terminal is connected to the signal ground through the third resistor. The twentieth terminal is connected to the first terminal of the selector switch. The twenty-first terminal is connected to the fourth terminal of the selector switch. The twenty-third terminal is connected to the 3.3V voltage terminal and is also connected to the twenty-fourth terminal and the signal ground through the first capacitor. The antenna terminal is connected to the signal ground. The signal ground is grounded through the fourth resistor.

3. The positioning system fast switching circuit according to claim 2, characterized in that, The first positioning unit also includes a first transistor, a second transistor, and fifth to eighth resistors; The drain of the first transistor is connected to the twenty-third terminal of the first chip, the source is connected to the 3.3V voltage terminal through the fifth resistor, and the gate is connected to the collector of the second transistor. The collector of the second transistor is connected to the source of the first transistor through the sixth resistor, the base is connected to the main control chip through the seventh resistor, the emitter is connected to the base through the eighth resistor, and the emitter is grounded.

4. The positioning system fast switching circuit according to claim 1, characterized in that, The second positioning unit includes a positioning board, a connecting terminal, and a second capacitor; the connecting terminal is soldered onto the main board and located on one side of the first positioning unit. Its first end is connected to the GPS_3.3V_A voltage terminal and is also grounded through the second capacitor. Its second end is grounded, its third end is connected to the third end of the selector switch, and its fourth end is connected to the sixth end of the selector switch; the positioning board is inserted into the connecting terminal and installed above the first positioning unit.

5. The positioning system fast switching circuit according to claim 4, characterized in that, The second positioning unit also includes a third transistor, a fourth transistor, and ninth to twelfth resistors; The drain of the third transistor is connected to the first terminal of the connection terminal, the source is connected to the 3.3V voltage terminal through the ninth resistor, and the gate is connected to the collector of the fourth transistor. The collector of the fourth transistor is connected to the source of the third transistor through the tenth resistor, the base is connected to the main control chip through the eleventh resistor, the emitter is connected to the base through the twelfth resistor, and the emitter is grounded.

6. The positioning system fast switching circuit according to claim 1, characterized in that, The debugging unit on the board includes a second chip, a first terminal, a second terminal, a first fuse, a second fuse, a first diode, a second diode, thirteenth to fifteenth resistors, and a third capacitor; the model of the second chip is SN65HVD11DR; The first end of the second chip is connected to the main control chip, the second end is connected to the third end, and is also connected to the main control chip through the thirteenth resistor. The fourth end is connected to the main control chip, the fifth end is grounded, the sixth end is connected to one end of the first terminal and one end of the second terminal through the first fuse, and is also connected to the 5V voltage terminal through the fourteenth resistor, and is also grounded through the first diode. The seventh end is connected to the other end of the first terminal and the other end of the second terminal through the second fuse, and is also grounded through the fifteenth resistor, and is also grounded through the second diode. The eighth end is connected to the 3.3V voltage terminal. The 3.3V voltage terminal is grounded through a third capacitor.

7. The positioning system fast switching circuit according to claim 3, characterized in that, The first transistor is a P-channel MOSFET, and the second transistor is an NPN transistor.

8. The positioning system fast switching circuit according to claim 5, characterized in that, The third transistor is a P-channel MOSFET, and the fourth transistor is an NPN transistor.

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