Solar energy collection equipment applied to water meter

Abstract

The invention 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 input end of the main control board is connected with the output end of the multi-power-supply conversion module, the output end of the main control board is connected with the input ends of the photovoltaic charging control module, the liquid crystal display module, the communication module and the multi-interface module, and the input end of the photovoltaic charging control module is connected with the photovoltaic panel. The output end of the photovoltaic charging control module is connected with the input end of the multi-power conversion module, and the output end of the multi-interface module is connected with the water meter. The technical problems that construction wiring is complex and a bus interface is single due to the fact that an existing collection device is powered by the mains supply are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent water meters, and in particular to a solar energy collection device applied to a water meter. Background Art

[0002] In daily life, wired water meter applications usually connect data acquisition devices through a bus for data interaction processing. Since the number of acquisition devices can reach hundreds, they are usually powered by city electricity, so strong power construction wiring is required, and the collected data cannot be displayed intuitively on the acquisition device. The data display content is small, and instructions cannot be issued intuitively, such as meter reading and valve status, etc. At the same time, the bus interface connecting the slave device is single, which cannot meet the selection of multiple bus interface types. Patent document with application number CN201510248560.3 discloses a remote positioning control water meter data acquisition system, which includes a user water meter, a data collector connected to the user water meter, a data transmitter for transmitting the collected data, and a main control system, characterized in that: the user water meter and the server realize two-way communication through the Internet and the network communication device through the network, and the network realizes two-way communication by: a plurality of user water meters and the network communication device are connected to a data bus, a data storage device, a data analyzer and a second data transmitter are connected in series on the data bus, and the second data transmitter is connected to the network communication device connected to the control host by a network connection. Since the two-way communication between the user's water meter and the server through the Internet and the network communication equipment is realized through the network, it provides convenient and fast statistics of the user's water meter data, provides accurate data for users to pay accurately, and the system can still operate normally in the case of host data loss. Therefore, it is urgent to propose a solar energy collection device applied to water meters to solve the above technical problems. Summary of the invention

[0003] The main purpose of the present invention is to provide a solar energy collection device for water meters, aiming to solve the technical problems that the existing collection devices are all powered by municipal electricity, resulting in complex construction and wiring and a single bus interface.

[0004] To achieve the above object, the present invention provides a solar energy collection device applied to a water meter, wherein the solar energy collection device applied to a water meter comprises:

[0005] 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 input end of the main control board is connected to the output end of the multi-power conversion module, the output end of the main control board is respectively connected to the input ends of the photovoltaic charging control module, the liquid crystal display module, the communication module and the multi-interface module, the input end of the photovoltaic charging control module is connected to the photovoltaic panel, the output end of the photovoltaic charging control module is connected to the input end of the multi-power conversion module, and the output end of the multi-interface module is connected to the water meter.

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

[0007] In one preferred solution, the liquid crystal display module includes a transceiver U11, a display screen interface J3, a fuse F1, a diode TV4, a MOS tube Q4, a resistor R65, a resistor 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 screen interface J3, and the display screen interface J3 is respectively connected to the fuse F1 and diode TV4, the other end of the fuse F1 is connected to the drain of the MOS tube Q4, the gate of the MOS tube Q4 is respectively connected to the resistor R64 and the resistor R65, the source of the MOS tube Q4 is respectively connected to the other end of the resistor R64, the cathode of the diode D2 and the ground, the other end of the resistor R65 is respectively connected to the collector of the transistor V10, the base of the transistor V10 is connected to the main control board, and the emitter of the transistor V10 and the other end of the diode TV4 are grounded.

[0008] In one of the preferred solutions, 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 the communication module for powering;

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

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

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

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

[0014] In one of the preferred embodiments, 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 the capacitor C8 is respectively connected to pin 6 of the DC-DC converter U2, the cathode of the diode D4 and the inductor L2, the other end of the inductor L2 is respectively connected to resistor R8 and capacitor C9, the other end of the resistor R8 is respectively 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 respectively connected to the photovoltaic charging control module and the ground, and pin 2 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.

[0015] In one preferred embodiment, the third power conversion circuit includes a DC-DC converter U3; a pin 1 of the DC-DC converter U3 is respectively connected to a resistor R10 and a capacitor C13, the other end of the resistor R10 is respectively connected to a photovoltaic charging control module, a pin 10 of the DC-DC converter U3, and an inductor L3, the other end of the inductor L3 is respectively connected to an anode of a diode D5, a drain of a MOS tube Q2, and a capacitor C19, the gate of the MOS tube Q2 is connected to a pin 8 of the DC-DC converter U3, the source of the MOS tube Q2 is respectively connected to an inductor L3, and the gate of the MOS tube Q2 is connected to a pin 9 of the DC-DC converter U3. The other end of capacitor C19, resistor R15 and resistor R14 are connected, and the other end of the resistor R14 is respectively connected to pin 7 of the DC-DC converter U3 and capacitor C18; the cathode of the diode D5 is respectively connected to resistor R17, capacitor C20 and the multi-interface module, the other end of the resistor R17 is connected to resistor R16, pin 3 of the DC-DC converter U3 is connected to the main control board, and pins 6 and 11 of the DC-DC converter U3 and the other ends of capacitor C13, capacitor C18, resistor R15, resistor R16 and capacitor C20 are grounded.

[0016] One of the preferred schemes, 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 respectively connected to the diode TV5, the diode TV6 and the ground, and the other ends of the diode TV5 and the diode TV6 are connected to the liquid crystal display module.

[0017] One of the preferred solutions, 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 the diode D8, and the anode of the diode D8 is connected to the main control board and the power supply end; pins 2 and 3 of the communication chip U13 are respectively connected to the collector of the transistor V11 and the resistor R68, the other end of the resistor R68 is connected to the multi-power conversion module, and the base of the transistor V11 is connected to the main control board; pins 4 of the communication chip U13 are respectively connected to the collector of the transistor V12 and the resistor R72, the emitter of the transistor V12 is connected to the multi-power module, the base of the transistor V12 is connected to the collector of the transistor V13, and the base of the transistor V13 is connected to the main control board; the communication Pin 8 of chip U13 is respectively connected to the ground, the multi-power module and the resistor R73, the other end of the resistor R73 is respectively connected to the diode TV7, the 6-pin of the communication chip U13 and the 3-pin of the RS485 interface J4, the 7-pin of the communication chip U13 is respectively connected to the resistor R74, the diode TV8 and the 4-pin of the RS485 interface J4, the 1-pin of the RS485 interface J4 is respectively connected to the fuse F2 and the diode TV11, and the other end of the fuse F2 is connected to the multi-power module; Pin 5 of the communication chip U13, the resistor R74, the diode TV7, the diode TV8, the resistor R72, the other end of the diode TV11, the emitter of the transistor V11, the emitter of the transistor V13 and the 2-pin of the 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 MOS tube Q8, a resistor R93, a resistor R94, a resistor R95, a triode V19, a diode D12, a diode D11, a resistor R96, a diode TV12, a fuse F3, a discharge tube RV1, an MBUS interface J5, an operational amplifier U15, a diode D13 and a capacitor C61; the source of the MOS tube Q8 is respectively connected to the resistor R94, the multi-power module and the ground terminal, the gate of the MOS tube Q8 is respectively connected to the other end of the resistor R94 and the resistor R93, the other end of the resistor R93 is connected to the collector of the triode V19, the base of the triode V19 is connected to the main control board, and the drain of the MOS tube Q8 is respectively connected to the anode of the diode D12. The cathode of the diode D12 is connected to the cathode of the diode D11 and the resistor R96 respectively, the anode of the diode D11 is connected to the photovoltaic charging control module, the other end of the resistor R96 is respectively connected to the main control board, the diode TV12, the fuse F3 and the 2nd and 3rd pins of the operational amplifier U15, the 8th pin of the operational amplifier U15 is respectively connected to the cathode of the diode D13 and the capacitor C61, the anode of the diode D13 is connected to the multi-power module, and the capacitor C61 is grounded; the other end of the fuse F3 is respectively connected to the discharge tube RV1 and the 1st pin of the MBUS interface J5, and the emitter of the transistor V19, the resistor R95, the diode TV12, the other end of the discharge tube RV1 and the 2nd pin of the MBUS interface J5 are grounded.

[0019] In the above technical solution of the present invention, the solar energy collection equipment applied to the water meter 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 input end of the main control board is connected to the output end of the multi-power conversion module, the output end of the main control board is respectively connected to the input ends of the photovoltaic charging control module, the liquid crystal display module, the communication module and the multi-interface module, the input end of the photovoltaic charging control module is connected to the photovoltaic panel, the output end of the photovoltaic charging control module is connected to the input end of the multi-power conversion module, and the output end of the multi-interface module is connected to the water meter. The present invention adopts the photovoltaic charging method, does not require complex wiring, can collect data and issue control instructions in real time through the liquid crystal display module, and has multiple types of bus interface options, which solves the technical problems that the existing collection equipment is powered by municipal electricity, resulting in complex construction wiring and a single bus interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[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 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 is a schematic diagram of a photovoltaic charging control module according to an embodiment of the present invention;

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

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

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

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

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

[0029] Fig. 9 Schematic diagram of the RS232 interface circuit of an embodiment of the present invention;

[0030] Fig.10 Schematic diagram of the interface circuit 485 of the embodiment of the present invention;

[0031] Fig.11 Schematic diagram of an MBUS interface circuit according to an embodiment of the present invention;

[0032] Fig.12 Schematic diagram of a main control board according to an embodiment of the present invention;

[0033] Fig.13 Schematic diagram of a communication module according to an embodiment of the present invention.

[0034] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with the implementation methods and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] In addition, in the present invention, the descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0037] Furthermore, the technical solutions between the various embodiments of the present invention may be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in the field. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0038] See also Figure 1-Figure 13 According to one aspect of the present invention, the present invention provides a solar energy collection device applied to a water meter, wherein the solar energy collection device applied to the water meter comprises: 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 input end of the main control board is connected to the output end of the multi-power conversion module, the output end of the main control board is respectively connected to the input ends of the photovoltaic charging control module, the liquid crystal display module, the communication module and the multi-interface module, the input end of the photovoltaic charging control module is connected to the photovoltaic panel, the output end of the photovoltaic charging control module is connected to the input end of the multi-power conversion module, and the output end of 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 MOS tube Q6, a capacitor C66, a battery J8, and an operational amplifier U17; the anode of the diode D1 is connected to the photovoltaic panel, the cathode of the diode D1 is respectively connected to the capacitor C66, the battery J8 and the resistor R113, the other end of the resistor R113 is respectively connected to the 3 pin of the operational amplifier U17 and the resistor R115, and the other end of the resistor R115 is grounded; The other end of the capacitor C66 is respectively connected to the other end of the battery J8, the drain of the MOS tube Q6 and the resistor R114, the other end of the resistor R114 is respectively connected to the 4th pin of the operational amplifier U17 and the resistor R116, the other end of the resistor R116 is connected to the 1st pin of the operational amplifier U17; the source of the MOS tube Q6 is respectively connected to the emitter of the transistor V21, the photovoltaic panel and the ground terminal, the gate of the MOS tube Q6 is respectively connected to the resistor R107 and the collector of the transistor V21, the transistor The base of V21 is connected to the resistor R106, the other end of the resistor R106 is connected to the main control board, the 2 pin of the operational amplifier U17 is grounded, the 5 pin of the operational amplifier U17 is respectively connected to the fourth power conversion circuit and the capacitor C68, the other end of the capacitor C68 is respectively connected to the capacitor C69 and the ground end, and the other end of the capacitor C69 is connected to the 1 pin of the operational amplifier U17 and the main control board; the diode D1 can be connected to the photovoltaic panel in a way that the battery and other circuits are damaged. At the same time, when the battery is out of power, this circuit can automatically start charging and repairing the battery with solar energy. The MOS tube Q6 controls the photovoltaic panel to charge the battery, and provides detection of the photovoltaic voltage and the battery voltage according to the battery voltage detection judgment. According to the different reference grounds of the main control board, differential circuit sampling is adopted. When the photovoltaic panel and the battery are powered at the same time, the diode in the MOS tube Q6 is used for seamless power supply output. When the photovoltaic output voltage is high, the battery voltage is low. At this time, the load power supply mainly relies on solar energy, which can save battery power, be environmentally friendly and sustainable, and there is no need to supply power through the mains, resulting in complex wiring.

[0040] Specifically, in this embodiment, the liquid crystal display module includes a transceiver U11, a display screen interface J3, a fuse F1, a diode TV4, a MOS tube Q4, a resistor R65, a resistor R64, a transistor V10, and a diode D2; pin 1 of the transceiver U11 is connected to pin 3 of the transceiver U11 through a capacitor C44, pin 4 of the transceiver U11 is connected to pin 5 of the transceiver U11 through a capacitor C45, pin 16 of the transceiver U11 is connected to a power supply end and a capacitor C48, pin 2 of the transceiver U11 is connected to a capacitor C47, pin 6 of the transceiver U11 is connected to a capacitor C46, ​​and pin 15 of the transceiver U11, capacitor C46, ​​capacitor C47, and the other end of capacitor 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 main control board. The multi-interface module is connected, the 13th and 14th pins of the transceiver U11 are connected to the display interface J3, the display interface J3 is respectively connected to the fuse F1 and the diode TV4, the other end of the fuse F1 is linked to the drain of the MOS tube Q4, the gate of the MOS tube Q4 is respectively connected to the resistor R64 and the resistor R65, the source of the MOS tube Q4 is respectively connected to the other end of the resistor R64, the cathode of the diode D2, the capacitor C54, the capacitor C55 and the ground, the other end of the resistor R65 is respectively 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, and the emitter of the transistor V10 and the other ends of the diode TV4, the capacitor C54 and the capacitor C55 are grounded; the present invention can directly input control instructions to the main control board through the liquid crystal display module to perform data acquisition and valve action.

[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 is used to output a first power supply to power the communication module; the second power conversion circuit is used to output a second power supply to power the multi-interface module; the third power conversion circuit is used to output a third power supply to power the multi-interface module; the fourth power conversion circuit is used to output a fourth power supply to power the main control board; in the present 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. The present invention does not make specific limitations and can be set according to needs.

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

[0043] Specifically, in the present embodiment, the second power conversion circuit comprises a DC-DC converter U2; pin 1 of the DC-DC converter U2 is connected to capacitor C8, the other end of the capacitor C8 is respectively connected to pin 6 of the DC-DC converter U2, the cathode of the diode D4 and the inductor L2, the other end of the inductor L2 is respectively connected to resistor R8, capacitor C9, capacitor C10 and the 485 interface circuit, the other end of the resistor R8 is respectively 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 respectively connected to the photovoltaic charging control module and capacitor C7, the other end of the capacitor C7 is connected to the ground, pin 2 of the DC-DC converter U2, the anode of the diode D4, resistor R9, capacitor C9 and the other end of capacitor C10 are grounded; the photovoltaic voltage or battery voltage is received by the second power conversion circuit and converted into a 5V voltage 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 respectively connected to a resistor R10 and a capacitor C13, the other end of the resistor R10 is respectively connected to a photovoltaic charging control module, a capacitor C12, pin 10 of the DC-DC converter U3, and an inductor L3, the other end of the inductor L3 is respectively connected to an anode of a diode D5, a drain of a MOS tube Q2, and a capacitor C19, the gate of the MOS tube Q2 is connected to pin 8 of the DC-DC converter U3 through a resistor R13, the source of the MOS tube Q2 is respectively connected to the other end of the capacitor C19, a resistor R15, and a resistor R14, ... a The other end of the resistor R14 is respectively connected to the 7-pin of the DC-DC converter U3 and the capacitor C18; the cathode of the diode D5 is respectively connected to the resistor R17, the capacitor C20, the capacitor C21 and the multi-interface module, the other end of the resistor R17 is connected to the resistor R16, the 3-pin of the DC-DC converter U3 is connected to the main control board through the resistor R91, the 6-pin and 11-pin of the DC-DC converter U3 and the other ends of the capacitor C13, the capacitor C12, the capacitor C18, the resistor R15, the resistor R16, the capacitor C20 and the capacitor C21 are grounded; the photovoltaic voltage or the battery voltage is received by the third power conversion circuit and converted into a 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 respectively connected to capacitor C64 and a photovoltaic charging control module, pin 3 of the voltage regulator U16 is respectively connected to a main control board and capacitor C65, 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 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 respectively connected to the diode TV5, the diode TV6 and the ground, and the other ends of the diode TV5 and the diode TV6 are connected to the liquid crystal display module; the RS232 interface circuit can be connected to the water meter through the 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 the diode D8, the anode of the diode D8 is respectively connected to the main control board and the resistor R69, and the other end of the resistor R69 is connected to the power supply end; pins 2 and 3 of the communication chip U13 are respectively connected to the collector of the transistor V11 and the resistor R68, the other end of the resistor R68 is connected to the second power conversion circuit, and the base of the transistor V11 is connected to the main control board through the resistor R67; pin 4 of the communication chip U13 is respectively connected to the collector of the transistor V12 and the resistor R72, the emitter of the transistor V12 is connected to the multi-power module, the base of the transistor V12 is connected to the collector of the transistor V13 through the resistor R71, and the base of the transistor V13 is connected to the main control board through the resistor R70; The 8 pins of the communication chip U13 are respectively connected to the capacitor C56, the multi-power module and the resistor R73, the other end of the capacitor C56 is grounded, the other end of the resistor R73 is respectively connected to the diode TV7, the 6 pins of the communication chip U13 and the 3 pins of the RS485 interface J4, the 7 pins of the communication chip U13 are respectively connected to the resistor R74, the diode TV8 and the 4 pins of the RS485 interface J4, the 1 pin of the RS485 interface J4 is respectively connected to the fuse F2 and the diode TV11, and the other end of the fuse F2 is connected to the multi-power module; the 5 pins of the communication chip U13, the resistor R74, the diode TV7, the diode TV8, the resistor R72, the other end of the diode TV11, the emitter of the transistor V11, the emitter of the transistor V13 and the 2 pins of the RS485 interface J4 are grounded; the 485 interface circuit can be connected to the water meter through the RS485 interface J4.

[0048] Specifically, in this embodiment, the multi-interface module includes an MBUS interface circuit; the MBUS interface circuit includes a MOS tube Q8, a resistor R93, a resistor R94, a resistor R95, a transistor V19, a diode D12, a diode D11, a resistor R96, a diode TV12, a fuse F3, a discharge tube RV1 and an MBUS interface J5; the source of the MOS tube Q8 is respectively connected to the resistor R94, the multi-power module and the capacitor C59, the other end of the capacitor C59 is grounded, the gate of the MOS tube Q8 is respectively connected to the other end of the resistor R94 and the resistor R93, the other end of the resistor R93 is connected to the collector of the transistor V19, and the transistor The base of the tube V19 is connected to the main control board through the resistor R92, the drain of the MOS tube Q8 is respectively connected to the anode of the diode D12 and the resistor R95, the cathode of the diode D12 is respectively connected to the cathode of the diode D11 and the resistor R96, the anode of the diode D11 is connected to the photovoltaic charging control module, the other end of the resistor R96 is respectively connected to the resistor R99, the resistor R103, the anode of the diode D19, the diode TV12 and the fuse F3, the other end of the resistor R99 is respectively connected to the resistor R98, the capacitor C60 and the main control board, and the other ends of the resistor R98 and the capacitor C60 are grounded; the cathode of the diode D19 is connected to the cathode of the diode D11 through the diode D11 in sequence. 8. The diode D17 is connected to the anode of the diode D16, the cathode of the diode D16 is respectively connected to the other end of the resistor R103, the resistor R104, the resistor R101, the capacitor C63 and the anode of the diode D14, the cathode of the diode D14 is connected to the resistor R102, the other end of the resistor R102 is respectively connected to the capacitor C62, the resistor R100 and the 2nd pin of the operational amplifier U15, the other ends of the resistor R104, the capacitor C63, the capacitor C62 and the resistor R100 are grounded; the other end of the resistor R101 is connected to the 3rd pin of the operational amplifier U15, the 4th pin of the operational amplifier U15 is grounded, the 8th pin of the operational amplifier U15 is The pins are respectively connected to the cathode of capacitor C61 and diode D13, the other end of the capacitor C61 is grounded, the anode of the diode D13 is connected to the third power conversion circuit, the other end of the fuse F3 is respectively connected to the discharge tube RV1 and pin 1 of the MBUS interface J5, the emitter of the transistor V19, the resistor R95, the diode TV12, the other end of the discharge tube RV1 and pin 2 of the MBUS interface J5 are grounded; the main control board transforms the MBUS+ voltage by controlling the switch tube Q8 to transmit data, the back-end MBUS water meter sends data to change the current, and the signal sampling and debugging outputs the received data; the MBUS interface circuit is connected to the water meter through the MBUS interface J5.

[0049] Specifically, in this embodiment, see Figure 12-13The main control board adopts the main control chip model STM32L496VET6, which is rich in resources and has an external FLASH, and the storage data is safe and reliable. The communication module is the 4G-CAT1 of the acquisition device. The communication module has a high success rate in transmitting the collected water meter data to the platform.

[0050] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A solar energy collection device applied to a water meter, characterized in that: include: Main control board, photovoltaic charging control module, LCD display module, communication module, multi-power conversion module and multi-interface module; The input end of the main control board is connected to the output end of the multi-power conversion module, the output end of the main control board is respectively connected to the input ends of the photovoltaic charging control module, the liquid crystal display module, the communication module and the multi-interface module, the input end of the photovoltaic charging control module is connected to the photovoltaic panel, the output end of the photovoltaic charging control module is connected to the input end of the multi-power conversion module, and the output end of the multi-interface module is connected to the water meter.

2. A solar energy collection device for water meter according to claim 1, characterized in that: The photovoltaic charging control module includes a diode D1, a resistor R108, a transistor V21, a resistor R107, a MOS tube Q6, a capacitor C66, a battery J8, and an operational amplifier U17; the anode of the diode D1 is connected to the photovoltaic panel, the cathode of the diode D1 is respectively connected to the capacitor C66, the battery J8 and the 3 pin of the operational amplifier U17, the other end of the capacitor C66 is respectively connected to the other end of the battery J8, the drain of the MOS tube Q6 and the 4 and 1 pins of the operational amplifier U17 The source of the MOS tube Q6 is respectively connected to the emitter of the transistor V21, the photovoltaic panel and the ground terminal, the gate of the MOS tube Q6 is respectively 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, the pin 2 of the operational amplifier U17 is grounded, the pin 5 of the operational amplifier U17 is connected to the power supply terminal, and the pin 1 of the operational amplifier U17 is connected to the main control board.

3. A solar energy collection device for water meter according to any one of claims 1-2, characterized in that: The liquid crystal display module includes a transceiver U11, a display screen interface J3, a fuse F1, a diode TV4, a MOS tube Q4, a resistor R65, a resistor 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 screen interface J3, and the display screen interface J3 is respectively connected to the fuse F1 and the diode The MOS tube TV4 is connected to the other end of the fuse F1, the other end of the fuse F1 is connected to the drain of the MOS tube Q4, the gate of the MOS tube Q4 is respectively connected to the resistor R64 and the resistor R65, the source of the MOS tube Q4 is respectively connected to the other end of the resistor R64, the cathode of the diode D2 and the ground, the other end of the resistor R65 is respectively connected to the collector of the triode V10, the base of the triode V10 is connected to the main control board, and the emitter of the triode V10 and the other end of the diode TV4 are grounded.

4. A solar energy collection device for water meter according to any one of claims 1-2, characterized in that: 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 is used to output a first power supply to the communication module for powering; The second power conversion circuit is used to output a second power supply to the multi-interface module for powering; The third power conversion circuit is used to output the third power supply to the multi-interface module for power supply; The fourth power conversion circuit is used to output the fourth power to the main control board for powering.

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

6. A solar energy collection device for water meter according to claim 4, characterized in that: 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 the capacitor C8 is respectively connected to pin 6 of the DC-DC converter U2, the cathode of the diode D4 and the inductor L2, the other end of the inductor L2 is respectively connected to resistor R8 and capacitor C9, the other end of the resistor R8 is respectively 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 respectively connected to the photovoltaic charging control module and the ground, and pin 2 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. A solar energy collection device for water meter according to claim 4, characterized in that: The third power conversion circuit includes a DC-DC converter U3; the 1 pin of the DC-DC converter U3 is respectively connected to the resistor R10 and the capacitor C13, the other end of the resistor R10 is respectively connected to the photovoltaic charging control module, the 10 pin of the DC-DC converter U3, and the inductor L3, the other end of the inductor L3 is respectively connected to the anode of the diode D5, the drain of the MOS tube Q2 and the capacitor C19, the gate of the MOS tube Q2 is connected to the 8 pin of the DC-DC converter U3, the source of the MOS tube Q2 is respectively connected to the capacitor C19 The other end of the diode D5 is connected to a resistor R15 and a resistor R14, and the other end of the resistor R14 is respectively connected to pin 7 of the DC-DC converter U3 and a capacitor C18; the cathode of the diode D5 is respectively connected to a resistor R17, a capacitor C20 and a multi-interface module, the other end of the resistor R17 is connected to a resistor R16, pin 3 of the DC-DC converter U3 is connected to the main control board, and pins 6 and 11 of the DC-DC converter U3 and the other ends of the capacitor C13, capacitor C18, resistor R15, resistor R16 and capacitor C20 are grounded.

8. A solar energy collection device for 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; pins 1 and 2 of the interface J9 are connected to the liquid crystal display module, pin 3 of the interface J9 is respectively connected to the diode TV5, the diode TV6 and the ground, and the other ends of the diode TV5 and the diode TV6 are connected to the liquid crystal display module.

9. A solar energy collection device for water meter according to any one of claims 1-2, characterized in that: 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 the diode D8, and the anode of the diode D8 is connected to the main control board and the power supply end; pins 2 and 3 of the communication chip U13 are respectively connected to the collector of the transistor V11 and the resistor R68, the other end of the resistor R68 is connected to the multi-power conversion module, and the base of the transistor V11 is connected to the main control board; pins 4 of the communication chip U13 are respectively connected to the collector of the transistor V12 and the resistor R72, the emitter of the transistor V12 is connected to the multi-power module, the base of the transistor V12 is connected to the collector of the transistor V13, and the base of the transistor V13 is connected to the main control board; the communication chip U The 8 pins of U13 are respectively connected to the ground, the multi-power module and the resistor R73, the other end of the resistor R73 is respectively connected to the diode TV7, the 6 pins of the communication chip U13 and the 3 pin of the RS485 interface J4, the 7 pins of the communication chip U13 are respectively connected to the resistor R74, the diode TV8 and the 4 pins of the RS485 interface J4, the 1 pin of the RS485 interface J4 is respectively connected to the fuse F2 and the diode TV11, and the other end of the fuse F2 is connected to the multi-power module; the 5 pins of the communication chip U13, the resistor R74, the diode TV7, the diode TV8, the resistor R72, the other end of the diode TV11, the emitter of the transistor V11, the emitter of the transistor V13 and the 2 pin of the RS485 interface J4 are grounded.

10. A solar energy collection device for water meter according to any one of claims 1-2, characterized in that: The multi-interface module includes an MBUS interface circuit; the MBUS interface circuit includes a MOS tube Q8, a resistor R93, a resistor R94, a resistor R95, a triode V19, a diode D12, a diode D11, a resistor R96, a diode TV12, a fuse F3, a discharge tube RV1, an MBUS interface J5, an operational amplifier U15, a diode D13 and a capacitor C61; the source of the MOS tube Q8 is respectively connected to the resistor R94, the multi-power module and the ground end, the gate of the MOS tube Q8 is respectively connected to the other end of the resistor R94 and the resistor R93, the other end of the resistor R93 is connected to the collector of the triode V19, the base of the triode V19 is connected to the main control board, and the drain of the MOS tube Q8 is respectively connected to the anode of the diode D12 and the resistor R11. R95 is connected, the cathode of the diode D12 is respectively connected to the cathode of the diode D11 and the resistor R96, the anode of the diode D11 is connected to the photovoltaic charging control module, the other end of the resistor R96 is respectively connected to the main control board, the diode TV12, the fuse F3 and the 2nd and 3rd pins of the operational amplifier U15, the 8th pin of the operational amplifier U15 is respectively connected to the cathode of the diode D13 and the capacitor C61, the anode of the diode D13 is connected to the multi-power module, and the capacitor C61 is grounded; the other end of the fuse F3 is respectively connected to the discharge tube RV1 and the 1st pin of the MBUS interface J5, and the emitter of the transistor V19, the resistor R95, the diode TV12, the other end of the discharge tube RV1 and the 2nd pin of the MBUS interface J5 are grounded.

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