Solar energy collection equipment applied to water meter

Abstract

The utility model discloses solar energy collection equipment applied to a water meter. The solar energy collection equipment comprises a main control board, a photovoltaic charging control module, a liquid crystal display module, a communication module, a multi-power-supply conversion module and a multi-interface module, the main control board is connected with the multi-power conversion module, the main control board is respectively connected with the photovoltaic charging control module, the liquid crystal display module, the communication module and the multi-interface module, the photovoltaic charging control module is connected with the photovoltaic panel, the photovoltaic charging control module is connected with the multi-power conversion module, and the multi-interface module is connected with the water meter. According to the utility model, the technical problems of complex construction wiring and single bus interface caused by the adoption of commercial power for power supply in the existing acquisition equipment are solved.

Description

Technical Field

[0001] This utility model relates to the field of smart water meter technology, and in particular to a solar energy collection device for use in water meters. Background Technology

[0002] In daily life, wired water meter applications typically use bus connections to collect data for data exchange and processing. Since the number of data acquisition devices can reach hundreds, they are usually powered by mains electricity, requiring high-voltage wiring. Furthermore, the collected data cannot be displayed intuitively on the acquisition devices, displaying limited information and hindering direct command issuance, such as meter reading and valve status. Additionally, the bus interface connecting the slave devices is limited, failing to accommodate multiple bus interface types. Patent application CN201510248560.3 discloses a remote positioning and control water meter data acquisition system. This system includes user water meters, data collectors connected to the user water meters, data transmitters for transmitting collected data, and a main control system. Its key feature is that the user water meters and the server communicate bidirectionally via the internet and network communication devices. This bidirectional communication is achieved by connecting multiple user water meters to the network communication devices via a data bus. The data bus is connected in series with a data storage device, a data analyzer, and a second data transmitter. The second data transmitter is connected to the network communication device connected to the control host via a network connection. Because the system utilizes a two-way communication network between the user's water meter and the server via the internet and network communication equipment, it provides convenient and rapid data collection for user water meter data, enabling accurate billing. Furthermore, the system continues to operate normally even if the host data is lost. Therefore, there is an urgent need to propose a solar-powered data collection device for water meters to solve the aforementioned technical problems. Utility Model Content

[0003] The main purpose of this invention is to propose a solar energy acquisition device for water meters, which aims to solve the technical problems of existing acquisition devices that all use mains power, resulting in complex construction wiring and a single bus interface.

[0004] To achieve the above objectives, this utility model provides a solar energy collection device for use in water meters, wherein the solar energy collection device for use in water meters includes:

[0005] The system comprises a main control board, a photovoltaic charging control module, an LCD display module, a communication module, a multi-power conversion module, and a multi-interface module. The main control board is connected to the multi-power conversion module, and is also connected to the photovoltaic charging control module, the LCD display module, the communication module, and the multi-interface module. The photovoltaic charging control module is connected to the photovoltaic panel, the multi-power conversion module, and the multi-interface module is connected to the water meter.

[0006] In one preferred embodiment, the photovoltaic charging control module includes a diode D1, a resistor R108, a transistor V21, a resistor R107, a MOSFET Q6, a capacitor C66, a battery J8, and an operational amplifier U17. The anode of the diode D1 is connected to the photovoltaic panel, and the cathode of the diode D1 is connected to the capacitor C66, the battery J8, and pin 3 of the operational amplifier U17. The other end of the capacitor C66 is connected to the other end of the battery J8, the drain of the MOSFET Q6, and pin 4 of the operational amplifier U17. Pin 1 is connected to the main control board. The source of the MOSFET Q6 is connected to the emitter of the transistor V21, the photovoltaic panel, and the ground terminal. The gate of the MOSFET Q6 is connected to the resistor R107 and the collector of the transistor V21. The base of the transistor V21 is connected to the resistor R106. The other end of the resistor R106 is connected to the main control board. Pin 2 of the operational amplifier U17 is grounded. Pin 5 of the operational amplifier U17 is connected to the power supply terminal. Pin 1 of the operational amplifier U17 is connected to the main control board.

[0007] In one preferred embodiment, the liquid crystal display module includes a transceiver U11, a display interface J3, a fuse F1, a diode TV4, a MOSFET Q4, resistors R65 and R64, a transistor V10, and a diode D2. Pins 9, 10, 11, and 12 of the transceiver U11 are connected to the main control board; pins 7 and 8 of the transceiver U11 are connected to the multi-interface module; pins 13 and 14 of the transceiver U11 are connected to the display interface J3; and the display interface J3 is connected to the fuse F1. The fuse F1 is connected to the drain of the MOSFET Q4. The gate of the MOSFET Q4 is connected to resistors R64 and R65. The source of the MOSFET Q4 is connected to the other end of resistor R64, the cathode of diode D2, and ground. The other end of resistor R65 is connected to the collector of transistor V10. The base of transistor V10 is connected to the main control board. The emitter of transistor V10 and the other end of diode TV4 are grounded.

[0008] In one preferred embodiment, the multi-power conversion module includes a first power conversion circuit, a second power conversion circuit, a third power conversion circuit, and a fourth power conversion circuit;

[0009] The first power conversion circuit is used to output a first power supply to power the communication module;

[0010] The second power conversion circuit is used to output a second power supply to power the multi-interface module;

[0011] The third power conversion circuit is used to output a third power supply to power the multi-interface module.

[0012] The fourth power conversion circuit is used to output a fourth power supply to power the main control board.

[0013] In one preferred embodiment, the first power conversion circuit includes a DC-DC converter U1; pin 1 of the DC-DC converter U1 is connected to resistor R3, the other end of resistor R3 is connected to inductor L1 and pin 3 of the DC-DC converter U1 via capacitor C4, the other end of inductor L1 is connected to resistor R5, capacitor C5, and the source of MOSFET Q1, the other end of resistor R5 is connected to pin 5 of the DC-DC converter U1 and resistor R4, the drain of MOSFET Q1 is connected to the communication module and resistor R106, the gate of MOSFET Q1 is connected to resistor R106 and the main control board, pin 2 of the DC-DC converter U1 is connected to resistor R1, capacitor C1, and the photovoltaic charging control module, the other end of resistor R1 is connected to resistor R2, pin 7 of the DC-DC converter U1, and capacitor C3, and the other ends of capacitor C5, resistor R4, capacitor C3, resistor R2, capacitor C1, and pins 4 and 6 of the DC-DC converter U1 are grounded.

[0014] In one preferred embodiment, the second power conversion circuit includes a DC-DC converter U2; pin 1 of the DC-DC converter U2 is connected to capacitor C8, the other end of capacitor C8 is connected to pin 6 of the DC-DC converter U2, the cathode of diode D4, and inductor L2, the other end of inductor L2 is connected to resistor R8 and capacitor C9, the other end of resistor R8 is connected to resistor R9 and pin 3 of the DC-DC converter U2, pin 4 of the DC-DC converter U2 is connected to the main control board, pin 5 of the DC-DC converter U2 is connected to the photovoltaic charging control module and ground, and pin 2 of the DC-DC converter U2, the anode of diode D4, resistor R9, and the other end of capacitor C9 are grounded.

[0015] In one preferred embodiment, the third power conversion circuit includes a DC-DC converter U3; pin 1 of the DC-DC converter U3 is connected to a resistor R10 and a capacitor C13, the other end of the resistor R10 is connected to the photovoltaic charging control module, pin 10 of the DC-DC converter U3, and an inductor L3, the other end of the inductor L3 is connected to the anode of diode D5, the drain of MOSFET Q2, and a capacitor C19, the gate of MOSFET Q2 is connected to pin 8 of the DC-DC converter U3, and the source of MOSFET Q2 is connected to the capacitor C19. The other end of capacitor C19, resistor R15, and resistor R14 are connected. The other end of resistor R14 is connected to pin 7 of DC-DC converter U3 and capacitor C18, respectively. The cathode of diode D5 is connected to resistor R17, capacitor C20, and the multi-interface module, respectively. The other end of resistor R17 is connected to resistor R16. Pin 3 of DC-DC converter U3 is connected to the main control board. Pins 6 and 11 of DC-DC converter U3, as well as the other ends of capacitors C13, C18, R15, R16, and C20, are grounded.

[0016] In one preferred embodiment, the multi-interface module includes an RS232 interface circuit; the RS232 interface circuit includes an interface J9, a diode TV5, and a diode TV6; pins 1 and 2 of the interface J9 are connected to the liquid crystal display module, pin 3 of the interface J9 is connected to the diode TV5, the diode TV6, and ground respectively, and the other end of the diode TV5 and the diode TV6 is connected to the liquid crystal display module.

[0017] In one preferred embodiment, the multi-interface module includes a 485 interface circuit; the 485 interface circuit includes a communication chip U13; pin 1 of the communication chip U13 is connected to the cathode of diode D8, and the anode of diode D8 is connected to the main control board and the power supply terminal; pins 2 and 3 of the communication chip U13 are connected to the collector of transistor V11 and resistor R68 respectively, the other end of resistor R68 is connected to the multi-power conversion module, and the base of transistor V11 is connected to the main control board; pin 4 of the communication chip U13 is connected to the collector of transistor V12 and resistor R72 respectively, the emitter of transistor V12 is connected to the multi-power conversion module, the base of transistor V12 is connected to the collector of transistor V13, and the base of transistor V13 is connected to the main control board; the communication... The 8 pins of chip U13 are connected to ground, the multi-power supply module, and resistor R73 respectively. The other end of resistor R73 is connected to diode TV7, pin 6 of communication chip U13, and pin 3 of RS485 interface J4 respectively. Pin 7 of communication chip U13 is connected to resistor R74, diode TV8, and pin 4 of RS485 interface J4 respectively. Pin 1 of RS485 interface J4 is connected to fuse F2 and diode TV11 respectively. The other end of fuse F2 is connected to the multi-power supply module. Pin 5 of communication chip U13, resistor R74, diode TV7, diode TV8, resistor R72, the other end of diode TV11, the emitter of transistor V11, the emitter of transistor V13, and pin 2 of RS485 interface J4 are grounded.

[0018] In one preferred embodiment, the multi-interface module includes an MBUS interface circuit; the MBUS interface circuit includes a MOSFET Q8, resistors R93, R94, and R95, a transistor V19, diodes D12 and D11, resistor R96, diode TV12, fuse F3, discharge tube RV1, MBUS interface J5, operational amplifier U15, diode D13, and capacitor C61; the source of the MOSFET Q8 is connected to resistor R94, the multi-power supply module, and ground; the gate of the MOSFET Q8 is connected to the other end of resistor R94 and resistor R93; the other end of resistor R93 is connected to the collector of transistor V19; the base of transistor V19 is connected to the main control board; and the drain of the MOSFET Q8 is connected to the anode of diode D12. The cathode of diode D12 is connected to the cathode of diode D11 and resistor R96, and the anode of diode D11 is connected to the photovoltaic charging control module. The other end of resistor R96 is connected to the main control board, diode TV12, fuse F3, and pins 2 and 3 of operational amplifier U15. Pin 8 of operational amplifier U15 is connected to the cathode of diode D13 and capacitor C61, and the anode of diode D13 is connected to the multi-power supply module. Capacitor C61 is grounded. The other end of fuse F3 is connected to discharge tube RV1 and pin 1 of MBUS interface J5. The emitter of transistor V19, resistor R95, diode TV12, the other end of discharge tube RV1, and pin 2 of MBUS interface J5 are grounded.

[0019] In the above-described technical solution of this utility model, the solar energy data acquisition device applied to a water meter includes: a main control board, a photovoltaic charging control module, an LCD display module, a communication module, a multi-power conversion module, and a multi-interface module. The main control board is connected to the multi-power conversion module, and is also connected to the photovoltaic charging control module, the LCD display module, the communication module, and the multi-interface module. The photovoltaic charging control module is connected to the photovoltaic panel, the multi-power conversion module, and the multi-interface module is connected to the water meter. This utility model uses photovoltaic charging, eliminating the need for complex wiring. It can acquire data and issue control commands in real time through the LCD display module, and has multiple types of bus interface options, solving the technical problems of existing data acquisition devices using mains power, which leads to complex construction wiring and a single bus interface. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a first schematic diagram of a solar energy collection device applied to a water meter according to an embodiment of the present invention;

[0022] Figure 2 This is a second schematic diagram of a solar energy collection device applied to a water meter according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the photovoltaic charging control module according to an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the liquid crystal display module according to an embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the first power conversion circuit according to an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the second power conversion circuit according to an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the third power conversion circuit according to an embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of the fourth power conversion circuit according to an embodiment of the present invention;

[0029] Figure 9 This is a schematic diagram of the RS232 interface circuit according to an embodiment of the present invention;

[0030] Figure 10 This is a schematic diagram of the interface circuit of embodiment 485 of this utility model;

[0031] Figure 11 This is a schematic diagram of the MBUS interface circuit according to an embodiment of the present invention;

[0032] Figure 12 This is a schematic diagram of the main control board according to an embodiment of the present utility model;

[0033] Figure 13 This is a schematic diagram of the communication module in an embodiment of the present invention.

[0034] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the implementation methods and with reference to the accompanying drawings. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0037] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0038] See Figures 1-13 According to one aspect of this utility model, a solar energy collection device for use in water meters is provided. The solar energy collection device for water meters includes: a main control board, a photovoltaic charging control module, a liquid crystal display module, a communication module, a multi-power conversion module, and a multi-interface module. The main control board is connected to the multi-power conversion module, and is also connected to the photovoltaic charging control module, the liquid crystal display module, the communication module, and the multi-interface module. The photovoltaic charging control module is connected to a photovoltaic panel, the photovoltaic charging control module is connected to the multi-power conversion module, and the multi-interface module is connected to the water meter.

[0039] Specifically, in this embodiment, the photovoltaic charging control module includes a diode D1, a resistor R108, a transistor V21, a resistor R107, a MOSFET Q6, a capacitor C66, a battery J8, and an operational amplifier U17. The anode of the diode D1 is connected to the photovoltaic panel, and the cathode of the diode D1 is connected to the capacitor C66, the battery J8, and the resistor R113. The other end of the resistor R113 is connected to pin 3 of the operational amplifier U17 and a resistor R115, and the other end of the resistor R115 is grounded. The other end of capacitor C66 is connected to the other end of battery J8, the drain of MOSFET Q6, and resistor R114. The other end of resistor R114 is connected to pin 4 of operational amplifier U17 and resistor R116. The other end of resistor R116 is connected to pin 1 of operational amplifier U17. The source of MOSFET Q6 is connected to the emitter of transistor V21, the photovoltaic panel, and ground. The gate of MOSFET Q6 is connected to resistor R107 and the collector of transistor V21. The base of V21 is connected to resistor R106, and the other end of resistor R106 is connected to the main control board. Pin 2 of operational amplifier U17 is grounded, and pin 5 of operational amplifier U17 is connected to the fourth power conversion circuit and capacitor C68 respectively. The other end of capacitor C68 is connected to capacitor C69 and ground respectively, and the other end of capacitor C69 is connected to pin 1 of operational amplifier U17 and the main control board. Diode D1 can prevent the photovoltaic panel from being connected to the wrong circuit and damaging the battery. At the same time, this circuit can automatically start charging and repairing the battery when there is no power. MOSFET Q6 controls the photovoltaic panel to charge the battery. Based on the battery voltage detection, it provides detection of photovoltaic voltage and battery voltage. Differential circuit sampling is used according to different reference grounds of the main control board. When both the photovoltaic panel and the battery are powered, the diode in MOSFET Q6 provides seamless power output. When the photovoltaic output voltage is high and the battery voltage is low, the load power supply mainly relies on solar energy, which can save battery power, is environmentally friendly and sustainable, and does not require power supply from the mains, thus avoiding complex wiring.

[0040] Specifically, in this embodiment, the liquid crystal display module includes a transceiver U11, a display interface J3, a fuse F1, a diode TV4, a MOSFET Q4, resistors R65 and R64, a transistor V10, and a diode D2. Pin 1 of the transceiver U11 is connected to pin 3 via capacitor C44; pin 4 of the transceiver U11 is connected to pin 5 via capacitor C45; pin 16 of the transceiver U11 is connected to the power supply and capacitor C48; pin 2 of the transceiver U11 is connected to capacitor C47; pin 6 of the transceiver U11 is connected to capacitor C46; and pin 15 of the transceiver U11, the other ends of capacitors C46, ​​C47, and C48 are grounded. Pins 9, 10, 11, and 12 of the transceiver U11 are connected to the main control board; and pins 7 and 8 of the transceiver U11 are connected to… The transceiver U11 has multiple interface modules connected. Pins 13 and 14 of the transceiver U11 are connected to the display interface J3. The display interface J3 is connected to the fuse F1 and the diode TV4. The other end of the fuse F1 is connected to the drain of the MOSFET Q4. The gate of the MOSFET Q4 is connected to the resistors R64 and R65. The source of the MOSFET Q4 is connected to the other end of the resistor R64, the cathode of the diode D2, the capacitors C54 and C55, and ground. The other end of the resistor R65 is connected to the collector of the transistor V10. The base of the transistor V10 is connected to the main control board through the resistor R66. The emitter of the transistor V10, the diode TV4, and the other ends of the capacitors C54 and C55 are grounded. This invention allows direct input of control commands to the main control board via the LCD module for data acquisition and valve operation.

[0041] Specifically, in this embodiment, the multi-power conversion module includes a first power conversion circuit, a second power conversion circuit, a third power conversion circuit, and a fourth power conversion circuit. The first power conversion circuit outputs a first power supply to power the communication module. The second power conversion circuit outputs a second power supply to power the multi-interface module. The third power conversion circuit outputs a third power supply to power the multi-interface module. The fourth power conversion circuit outputs a fourth power supply to power the main control board. In this invention, the first power supply is 4V, the second power supply is 5V, the third power supply is 35V, and the fourth power supply is 3.3V. This invention does not impose specific limitations and can be set according to requirements.

[0042] Specifically, in this embodiment, the first power conversion circuit includes a DC-DC converter U1; pin 1 of the DC-DC converter U1 is connected to resistor R3, the other end of resistor R3 is connected to inductor L1 and pin 3 of the DC-DC converter U1 via capacitor C4, the other end of inductor L1 is connected to resistor R5, capacitor C5, capacitor C6, and the source of MOSFET Q1, the other end of resistor R5 is connected to pin 5 of the DC-DC converter U1 and resistor R4, the drain of MOSFET Q1 is connected to the communication module and resistor R106, and the gate of MOSFET Q1 is connected to the... Resistor R106 and resistor R6 are connected, and the other end of resistor R6 is connected to the main control board. Pin 2 of the DC-DC converter U1 is connected to resistor R1, capacitor C1, capacitor C2, and the photovoltaic charging control module, respectively. The other end of resistor R1 is connected to resistor R2, pin 7 of DC-DC converter U1, and capacitor C3, respectively. The other ends of capacitor C5, resistor R4, capacitor C3, resistor R2, capacitor C1, capacitor C6, capacitor C2, and pins 4 and 6 of DC-DC converter U1 are grounded. The first power conversion circuit receives photovoltaic voltage or battery voltage and converts it into 4V voltage to power the communication module.

[0043] Specifically, in this embodiment, the second power conversion circuit includes a DC-DC converter U2; pin 1 of the DC-DC converter U2 is connected to capacitor C8, the other end of capacitor C8 is connected to pin 6 of the DC-DC converter U2, the cathode of diode D4, and inductor L2, the other end of inductor L2 is connected to resistor R8, capacitor C9, capacitor C10, and the 485 interface circuit, the other end of resistor R8 is connected to resistor R9 and pin 3 of the DC-DC converter U2, pin 4 of the DC-DC converter U2 is connected to the main control board through resistor R7, pin 5 of the DC-DC converter U2 is connected to the photovoltaic charging control module and capacitor C7, the other end of capacitor C7 is connected to ground, and pin 2 of the DC-DC converter U2, the anode of diode D4, resistor R9, capacitor C9, and the other end of capacitor C10 are grounded; the second power conversion circuit receives photovoltaic voltage or battery voltage and converts it into 5V to power the 485 interface circuit.

[0044] Specifically, in this embodiment, the third power conversion circuit includes a DC-DC converter U3; pin 1 of the DC-DC converter U3 is connected to resistor R10 and capacitor C13 respectively; the other end of resistor R10 is connected to the photovoltaic charging control module, capacitor C12, pin 10 of the DC-DC converter U3, and inductor L3 respectively; the other end of inductor L3 is connected to the anode of diode D5, the drain of MOSFET Q2, and capacitor C19 respectively; the gate of MOSFET Q2 is connected to pin 8 of the DC-DC converter U3 through resistor R13; the source of MOSFET Q2 is connected to the other end of capacitor C19, resistor R15, and resistor R14 respectively. The other end of resistor R14 is connected to pin 7 of DC-DC converter U3 and capacitor C18 respectively; the cathode of diode D5 is connected to resistor R17, capacitor C20, capacitor C21 and the multi-interface module respectively; the other end of resistor R17 is connected to resistor R16; pin 3 of DC-DC converter U3 is connected to the main control board through resistor R91; pins 6 and 11 of DC-DC converter U3, as well as the other ends of capacitors C13, C12, C18, resistor R15, resistor R16, capacitor C20, and capacitor C21 are grounded; the third power conversion circuit receives photovoltaic voltage or battery voltage and converts it into 35V voltage to power the MBUS interface circuit.

[0045] Specifically, in this embodiment, the fourth power conversion circuit includes a voltage regulator U16. Pin 2 of the voltage regulator U16 is connected to capacitor C64 and the photovoltaic charging control module, respectively. Pin 3 of the voltage regulator U16 is connected to the main control board and capacitor C65, respectively. Pin 1 of the voltage regulator U16, capacitor C64, and the other end of capacitor C65 are grounded. The fourth power conversion circuit is used to receive photovoltaic voltage or battery voltage and convert it into 5V voltage to power the main control board.

[0046] Specifically, in this embodiment, the multi-interface module includes an RS232 interface circuit; the RS232 interface circuit includes interface J9, diode TV5, and diode TV6; pins 1 and 2 of interface J9 are connected to the liquid crystal display module, pin 3 of interface J9 is connected to diode TV5, diode TV6, and ground respectively, and the other ends of diode TV5 and diode TV6 are connected to the liquid crystal display module; the RS232 interface circuit can be connected to a water meter through interface J9.

[0047] Specifically, in this embodiment, the multi-interface module includes a 485 interface circuit; the 485 interface circuit includes a communication chip U13; pin 1 of the communication chip U13 is connected to the cathode of diode D8, the anode of diode D8 is connected to the main control board and resistor R69 respectively, and the other end of resistor R69 is connected to the power supply terminal; pins 2 and 3 of the communication chip U13 are connected to the collector of transistor V11 and resistor R68 respectively, the other end of resistor R68 is connected to the second power conversion circuit, and the base of transistor V11 is connected to the main control board through resistor R67; pin 4 of the communication chip U13 is connected to the collector of transistor V12 and resistor R72 respectively, the emitter of transistor V12 is connected to the multi-power supply module, the base of transistor V12 is connected to the collector of transistor V13 through resistor R71, and the base of transistor V13 is connected to the main control board through resistor R70; The 8 pins of the communication chip U13 are connected to capacitor C56, the multi-power supply module, and resistor R73 respectively. The other end of capacitor C56 is grounded. The other end of resistor R73 is connected to diode TV7, pin 6 of communication chip U13, and pin 3 of RS485 interface J4 respectively. Pin 7 of communication chip U13 is connected to resistor R74, diode TV8, and pin 4 of RS485 interface J4 respectively. Pin 1 of RS485 interface J4 is connected to fuse F2 and diode TV11 respectively. The other end of fuse F2 is connected to the multi-power supply module. Pin 5 of communication chip U13, resistor R74, diode TV7, diode TV8, resistor R72, the other end of diode TV11, the emitter of transistor V11, the emitter of transistor V13, and pin 2 of RS485 interface J4 are grounded. The 485 interface circuit can be connected to a water meter through RS485 interface J4.

[0048] Specifically, in this embodiment, the multi-interface module includes an MBUS interface circuit; the MBUS interface circuit includes a MOSFET Q8, resistors R93, R94, and R95, a transistor V19, diodes D12 and D11, resistor R96, diode TV12, fuse F3, discharge tube RV1, and MBUS interface J5; the source of the MOSFET Q8 is connected to resistor R94, the multi-power supply module, and capacitor C59, respectively, and the other end of capacitor C59 is grounded; the gate of the MOSFET Q8 is connected to the other end of resistor R94 and resistor R93, respectively, and the other end of resistor R93 is connected to the collector of transistor V19, and the transistor... The base of transistor V19 is connected to the main control board via resistor R92. The drain of MOSFET Q8 is connected to the anode of diode D12 and resistor R95. The cathode of diode D12 is connected to the cathode of diode D11 and resistor R96. The anode of diode D11 is connected to the photovoltaic charging control module. The other end of resistor R96 is connected to resistors R99 and R103, the anode of diode D19, diode TV12, and fuse F3. The other end of resistor R99 is connected to resistor R98, capacitor C60, and the main control board. The other ends of resistor R98 and capacitor C60 are grounded. The cathode of diode D19 is connected to diode D1... 8. The anodes of diodes D17 and D16 are connected. The cathode of diode D16 is connected to the other end of resistor R103, resistor R104, resistor R101, capacitor C63, and the anode of diode D14. The cathode of diode D14 is connected to resistor R102. The other end of resistor R102 is connected to capacitor C62, resistor R100, and pin 2 of operational amplifier U15. Resistors R104, C63, C62, and the other end of resistor R100 are grounded. The other end of resistor R101 is connected to pin 3 of operational amplifier U15. Pin 4 of operational amplifier U15 is grounded. Pin 8 of operational amplifier U15... The pins are connected to the cathodes of capacitor C61 and diode D13 respectively. The other end of capacitor C61 is grounded. The anode of diode D13 is connected to the third power conversion circuit. The other end of fuse F3 is connected to discharge tube RV1 and pin 1 of MBUS interface J5 respectively. The emitter of transistor V19, resistor R95, diode TV12, the other end of discharge tube RV1, and pin 2 of MBUS interface J5 are grounded. The main control board controls the switching transistor Q8 to change the MBUS+ voltage and transmit data. The backend MBUS water meter sends data to change the current, and the signal is sampled and debugged to obtain the received data. The MBUS interface circuit is connected to the water meter through MBUS interface J5.

[0049] Specifically, in this embodiment, the main control board uses an STM32L496VET6 main control chip, which has abundant resources and external FLASH memory, ensuring secure and reliable data storage. The communication module is a 4G-CAT1 for the data acquisition device, which ensures a high success rate in transmitting the collected water meter data to the platform.

[0050] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A solar energy harvesting device for application to a water meter, the device comprising: a solar panel; a housing; a water meter interface; and a water meter interface coupling the housing to the water meter interface. The utility model relates to a kind of solar power supply control device, including: Master control board, photovoltaic charging control module, liquid crystal display module, communication module, multiple power conversion module and multiple interface module; The master control board is connected with multiple power conversion module, the master control board is connected with photovoltaic charging control module, liquid crystal display module, communication module and multiple interface module respectively, the photovoltaic charging control module is connected with photovoltaic panel, the photovoltaic charging control module is connected with multiple power conversion module, and the multiple interface module is connected with water meter.

2. The solar energy harvesting device for water meter according to claim 1, wherein, The photovoltaic charging control module includes diode D1, resistance R108, triode V21, resistance R107, MOS tube Q6, capacitor C66, battery J8 and operational amplifier U17;The anode of diode D1 is connected with photovoltaic panel, the cathode of diode D1 is connected with capacitor C66, battery J8 and the 3 pin of operational amplifier U17 respectively, the other end of capacitor C66 is connected with the other end of battery J8, the drain of MOS tube Q6 and the 4,1 pin of operational amplifier U17 respectively, the source of MOS tube Q6 is connected with the emitter of triode V21, photovoltaic panel and ground terminal respectively, the gate of MOS tube Q6 is connected with resistance R107 and the collector of triode V21 respectively, the base of triode V21 is connected with resistance R106, the other end of resistance R106 is connected with master control board, the 2 pin of operational amplifier U17 is grounded, the 5 pin of operational amplifier U17 is connected with power supply end, and the 1 pin of operational amplifier U17 is connected with master control board.

3. A solar energy harvesting device for a water meter according to any one of claims 1-2, characterized in that, The liquid crystal display module includes transceiver U11, display screen interface J3, fuse F1, diode TV4, MOS tube Q4, resistance R65, resistance R64, triode V10 and diode D2;The 9,10,11,12 pin of transceiver U11 is connected with master control board, the 7,8 pin of transceiver U11 is connected with multiple interface module, the 13,14 pin of transceiver U11 is connected with display screen interface J3, the display screen interface J3 is connected with fuse F1 and diode TV4 respectively, the other end of fuse F1 is connected with the drain of MOS tube Q4, the gate of MOS tube Q4 is connected with resistance R64 and resistance R65 respectively, the source of MOS tube Q4 is connected with the other end of resistance R64, the cathode of diode D2 and ground terminal respectively, the other end of resistance R65 is connected with the collector of triode V10 respectively, the base of triode V10 is connected with master control board, the emitter of triode V10 and the other end of diode TV4 are grounded.

4. The solar energy harvesting device for water meters according to any one of claims 1-2, characterized in that, The multiple power conversion module includes first power conversion circuit, second power conversion circuit, third power conversion circuit and fourth power conversion circuit; The first power conversion circuit is used for outputting first power to communication module for power supply; The second power conversion circuit is used for outputting second power to multiple interface module for power supply; The third power conversion circuit is used for outputting third power to multiple interface module for power supply; The fourth power conversion circuit is used for outputting fourth power to master control board for power supply.

5. The solar energy harvesting device for application to a water meter of claim 4, wherein, The first power conversion circuit comprises a DC-DC converter U1; the 1 pin of the DC-DC converter U1 is connected with a resistor R3, the other end of the resistor R3 is connected with an inductor L1 and the 3 pin of the DC-DC converter U1 through a capacitor C4, the other end of the inductor L1 is connected with a resistor R5, a capacitor C5 and the source of a MOS tube Q1, the other end of the resistor R5 is connected with the 5 pin of the DC-DC converter U1 and a resistor R4, the drain of the MOS tube Q1 is connected with a communication module and a resistor R106, the gate of the MOS tube Q1 is connected with the resistor R106 and a main control board, the 2 pin of the DC-DC converter U1 is connected with a resistor R1, a capacitor C1 and a photovoltaic charging control module, the other end of the resistor R1 is connected with a resistor R2, the 7 pin of the DC-DC converter U1 and a capacitor C3, the other end of the capacitor C5, the resistor R4, the capacitor C3, the resistor R2, the capacitor C1 and the 4, 6 pins of the DC-DC converter U1 are grounded.

6. The solar energy harvesting device for application to a water meter of claim 4, wherein, The second power conversion circuit comprises a DC-DC converter U2; the 1 pin of the DC-DC converter U2 is connected with a capacitor C8, the other end of the capacitor C8 is connected with the 6 pin of the DC-DC converter U2, the cathode of a diode D4 and an inductor L2, the other end of the inductor L2 is connected with a resistor R8 and a capacitor C9, the other end of the resistor R8 is connected with a resistor R9 and the 3 pin of the DC-DC converter U2, the 4 pin of the DC-DC converter U2 is connected with a main control board, the 5 pin of the DC-DC converter U2 is connected with a photovoltaic charging control module and a ground, the 2 pin of the DC-DC converter U2, the anode of the diode D4, the resistor R9 and the other end of the capacitor C9 are grounded.

7. The solar energy harvesting device for water meters of claim 4, wherein, The third power conversion circuit comprises a DC-DC converter U3; the 1 pin of the DC-DC converter U3 is connected with a resistor R10 and a capacitor C13, the other end of the resistor R10 is connected with a photovoltaic charging control module, the 10 pin of the DC-DC converter U3 and an inductor L3, the other end of the inductor L3 is connected with the anode of a diode D5, the drain of a MOS tube Q2 and a capacitor C19, the gate of the MOS tube Q2 is connected with the 8 pin of the DC-DC converter U3, the source of the MOS tube Q2 is connected with the other end of the capacitor C19, a resistor R15 and a resistor R14, the other end of the resistor R14 is connected with the 7 pin of the DC-DC converter U3 and a capacitor C18; the cathode of the diode D5 is connected with a resistor R17, a capacitor C20 and a multi-interface module, the other end of the resistor R17 is connected with a resistor R16, the 3 pin of the DC-DC converter U3 is connected with a main control board, the 6, 11 pins of the DC-DC converter U3 and the other ends of the capacitor C13, the capacitor C18, the resistor R15, the resistor R16 and the capacitor C20 are grounded.

8. A solar energy harvesting device for a water meter according to any one of claims 1-2, characterized in that, The multi-interface module includes an RS232 interface circuit; the RS232 interface circuit includes an interface J9, a diode TV5 and a diode TV6; 1 and 2 pins of the interface J9 are connected with a liquid crystal display module, a 3 pin of the interface J9 is connected with the diode TV5, the diode TV6 and a ground terminal respectively, and the other ends of the diode TV5 and the diode TV6 are connected with the liquid crystal display module.

9. A solar energy harvesting device for a water meter according to any one of claims 1-2, wherein, The multi-interface module includes a 485 interface circuit; the 485 interface circuit includes a communication chip U13; a 1 pin of the communication chip U13 is connected with a cathode of a diode D8, an anode of the diode D8 is connected with a main control board and a power terminal; a 2 pin and a 3 pin of the communication chip U13 are connected with a collector of a triode V11 and a resistor R68 respectively, the other end of the resistor R68 is connected with a multi-power conversion module, a base of the triode V11 is connected with the main control board; a 4 pin of the communication chip U13 is connected with a collector of a triode V12 and a resistor R72 respectively, an emitter of the triode V12 is connected with a multi-power module, a base of the triode V12 is connected with a collector of a triode V13, and a base of the triode V13 is connected with the main control board; an 8 pin of the communication chip U13 is connected with a ground terminal, the multi-power module and a resistor R73 respectively, the other end of the resistor R73 is connected with a diode TV7, a 6 pin of the communication chip U13 and a 3 pin of an RS485 interface J4 respectively, a 7 pin of the communication chip U13 is connected with a resistor R74, a diode TV8 and a 4 pin of the RS485 interface J4 respectively, a 1 pin of the RS485 interface J4 is connected with a fuse F2 and a diode TV11 respectively, the other end of the fuse F2 is connected with the multi-power module; a 5 pin of the communication chip U13, the resistor R74, the diode TV7, the diode TV8, the resistor R72, the other end of the diode TV11, an emitter of the triode V11, an emitter of the triode V13 and a 2 pin of the RS485 interface J4 are grounded.

10. The solar energy harvesting device for water meters according to any one of claims 1-2, wherein, The multi-interface module includes an MBUS interface circuit; the MBUS interface circuit includes MOS tube Q8, resistor R93, resistor R94, resistor R95, triode V19, diode D12, diode D11, resistor R96, diode TV12, fuse F3, discharge tube RV1, MBUS interface J5, operational amplifier U15, diode D13 and capacitor C61; the source of the MOS tube Q8 is connected with the resistor R94, the multi-power module and the ground terminal respectively, the gate of the MOS tube Q8 is connected with the other end of the resistor R94 and the resistor R93 respectively, the other end of the resistor R93 is connected with the collector of the triode V19, the base of the triode V19 is connected with the main control panel, the drain of the MOS tube Q8 is connected with the anode of the diode D12 and the resistor R95 respectively, the cathode of the diode D12 is connected with the cathode of the diode D11 and the resistor R96 respectively, the anode of the diode D11 is connected with the photovoltaic charging control module, the other end of the resistor R96 is connected with the main control panel, the diode TV12, the fuse F3 and the 2, 3 pins of the operational amplifier U15 respectively, the 8 pin of the operational amplifier U15 is connected with the cathode of the diode D13 and the capacitor C61 respectively, the anode of the diode D13 is connected with the multi-power module, and the capacitor C61 is grounded; the other end of the fuse F3 is connected with the discharge tube RV1 and the 1 pin of the MBUS interface J5 respectively, the emitter of the triode V19, the resistor R95, the diode TV12, the other end of the discharge tube RV1 and the 2 pin of the MBUS interface J5 are grounded.

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