CN219416320U - Water meter with wireless charging and power supplying functions - Google Patents
Water meter with wireless charging and power supplying functions Download PDFInfo
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- CN219416320U CN219416320U CN202320453637.0U CN202320453637U CN219416320U CN 219416320 U CN219416320 U CN 219416320U CN 202320453637 U CN202320453637 U CN 202320453637U CN 219416320 U CN219416320 U CN 219416320U
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Abstract
The utility model particularly relates to a wireless charging power supply water meter which comprises a shell, a wireless charging main board, a water meter main board, an induction module, a rechargeable battery, a card swiping and reading coil, a valve body, a valve electric actuating mechanism and a water metering module. The wireless charging power supply replaces the disposable battery power supply, the workload that the battery needs to be replaced by disassembling the water meter shell is solved, the wireless charging power supply is suitable for long-time and large-current power supply, the working service life of the electronic water meter is correspondingly prolonged, and the wireless charging power supply can be more suitable for the development trend of the novel Internet of things water meter.
Description
Technical Field
The utility model relates to the technical field of intelligent water meters, in particular to a wireless charging and power supplying water meter.
Background
The traditional mechanical water meter with the old-fashioned single function is gradually eliminated by the intelligent electronic water meter, along with the gradual popularization and application of the intelligent electronic water meter, the electronic water meter with various functions also has great challenges to the power supply mode, the power consumption of the electronic water meter is very high because of the installation position and the special installation mode of the water meter, the power supply mode of the water meter which is inconvenient to independently lay a power supply cable is mainly used for supplying power to a disposable lithium battery, the capacity and the quality of the battery of the water meter determine the service life of the water meter to a great extent, and the power supply mode of the disposable lithium battery cannot adapt to the development requirement due to the appearance of various Internet of things water meters (wired and wireless remote water meters), so that the battery is also unacceptable to users through frequent replacement.
Disclosure of Invention
The utility model provides a wireless charging and power supplying water meter, which replaces disposable battery power supply with wireless charging and power supply, solves the problem that the battery needs to be replaced by disassembling a water meter shell, is suitable for long-time and large-current power supply, correspondingly prolongs the service life of an electronic water meter, and can be more suitable for the development trend of novel Internet of things water meters.
The utility model provides a wireless charging and power supplying water meter which comprises a shell, a wireless charging main board, a water meter main board, an induction module, a rechargeable battery, a card swiping and reading coil, a valve body, a valve electric actuating mechanism and a water metering module.
Preferably, an MCU is fixed on the water meter main board, and the MCU adopts HC32L136K8TA chips of Huada semiconductor company.
Preferably, the wireless charging main board is provided with a rectifier bridge, a filter circuit, a switching voltage stabilizing circuit and a connector CON2, the alternating voltage and current signal sent by the induction module is rectified by the rectifier bridge and then is output as smooth direct current by the filter circuit, and the direct current is stabilized by the switching voltage stabilizing circuit and then is output as 5V direct current power and is output by the connector CON 2.
Preferably, a charging circuit, a connector CON3, a filter capacitor C20 and a power supply VCC are arranged on the water meter main board, the charging circuit is composed of a charging integrated chip, resistors R5, R7 and an LED3, the connector CON3 inputs the 5V direct current power supply, and the power supply VCC is input to the charging circuit to charge a rechargeable battery after being filtered and decoupled by the filter capacitor C20 and simultaneously outputs the power supply VCC.
Preferably, the water meter main board is further connected with a card reading circuit, the card reading circuit comprises a card_125K end, a push-pull amplifying circuit, an interface CON6, an LC oscillating circuit, a detection amplitude limiting shaping circuit, an archeck end, a VC+ end and a VC-end, the card_125K end inputs a low-frequency pulse string with a specific period, the low-frequency pulse string is input to a card reading coil through the push-pull amplifying circuit composed of a resistor R4, a triode Q1, a resistor R16 and a resistor R17 and then is input to the card reading coil through the 2 end of the interface CON6, the card reading coil and a capacitor C11 compose the LC oscillating circuit, and a certain oscillating signal is generated and is input to the MCU through the Carcheck end, the VC+ end and the VC-end after passing through the detection amplitude limiting shaping circuit composed of a diode D1, a resistor R6, a R23, a resistor R18, a capacitor C51 and a capacitor C52.
Preferably, the water meter main board is also connected with a metering interface, the metering interface is connected with an MCU, the metering interface is compatible with an external metering sensor, and the external metering sensor can adopt a reed switch sensor or a magneto-resistance sensor.
Preferably, a valve control unit is connected to the main board of the water meter, the valve control unit adopts a driving chip of a direct current motor with the model BL8310, the driving chip, resistors R19, R20, R9, capacitors C12 and C10 form a direct current motor driving circuit, and the MCU unit controls forward/reverse rotation of the direct current motor to drive the water meter valve body to realize valve opening/closing.
Preferably, the water meter further comprises a liquid crystal display screen, and the liquid crystal display screen is fixed on a water meter main board and connected with the MCU.
The beneficial effects of the utility model are as follows:
according to the utility model, the wireless charging power supply is utilized to replace the disposable battery power supply, so that the workload of replacing batteries by disassembling the water meter shell is solved, the wireless charging power supply is suitable for long-time and large-current power supply, the working service life of the electronic water meter is correspondingly prolonged, and the novel internet of things water meter development trend can be more adapted.
Drawings
Fig. 1: a water meter structure diagram powered by wireless charging,
fig. 2: the circuit diagram of the MCU is shown in the specification,
fig. 3: a circuit diagram of the wireless charging part,
fig. 4: a charging circuit diagram is shown in the drawing,
fig. 5: a circuit diagram of the card is read out,
fig. 6: a circuit diagram of the metering interface,
fig. 7: the valve control unit circuit is provided with a control circuit,
fig. 8: and a circuit diagram of a liquid crystal display.
Description of the drawings:
1. a housing; 2. a water metering module; 3. a valve body; 4. an electric actuator of the valve; 5. a card reading coil for swiping cards; 6. a water meter main board; 7. a wireless charging main board; 8. an induction module; 9. a liquid crystal display; 10. and a rechargeable battery.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present utility model are within the scope of protection of the present utility model.
Examples
As shown in fig. 1, the wireless charging and power supplying water meter provided in this embodiment includes a housing 1, a wireless charging main board 7, a water meter main board 6, an induction module 8, a rechargeable battery 10, a card swiping and reading coil 5, a valve body 3, a valve electric actuating mechanism 4, and a water metering module 2, wherein the wireless charging main board 7 and the water meter main board 6 are both fixed in the housing 1, the rechargeable battery 10 is fixed on the water meter main board 6, the induction module 8 is fixed on the housing 1 and opposite to the wireless charging main board 7, the induction module 8 and the wireless charging main board 7 form a wireless charging module built in the water meter, the card swiping and reading coil 5 is fixed in the housing 1, the valve electric actuating mechanism 4 is fixed inside the housing 1 and connected with the valve body 3, the valve body 3 is outside the housing 1, and the water metering module 2 is connected outside the housing 1 and connected with the valve body 3.
As a preferred implementation manner of this embodiment, the water meter motherboard 6 is fixed with an MCU, the MCU uses a low power consumption HC32L136K8TA chip of hua semiconductor company, and integrates a large capacity embedded flash memory based on an armcotex-M0 core, which is a core part of the whole water meter module, and is used for collecting various input signals, processing the input signals, and outputting various control signals from the processed execution results. As shown in fig. 2, in the circuit, a crystal oscillator X1, a capacitor C3 and a capacitor C4 are main working clock CLK crystal oscillator circuits, an interface CON1 is an SWD download simulation interface, and a capacitor C2 and a resistor R1 form an MCU power-on reset circuit.
As shown in fig. 3, the wireless charging motherboard 7 is provided with a rectifier bridge, a filter circuit, a switching regulator circuit, and a connector CON2, the ac voltage and current signal sent by the sensing module 7 (GL in fig. 3) is rectified by the rectifier bridge BD1, filtered by the capacitors C5 and C6, and then a smooth dc power is output, and the dc power is stabilized by the switching regulator circuit composed of the inductor L2, the switching regulator chip U7, the capacitor C7, the resistors R2, R3, and the capacitors C8 and C9 and then is output as a 5V dc power through the connector CON 2.
As a preferred implementation manner of this embodiment, as shown in fig. 4, the water meter motherboard 6 is provided with a charging circuit, a connector CON3, a filter capacitor C20, and a power supply VCC, where the charging circuit is composed of a charging integrated chip, resistors R5, R7, and an LED3, the connector CON3 inputs the 5V dc power, and after being filtered and decoupled by the filter capacitor C20, the 5V dc power is input to the charging circuit to charge the rechargeable battery 10 (BAT 1 in fig. 4), and the charging circuit has overshoot, overtemperature, and constant current protection functions, so that the rechargeable battery 10 is not damaged, and meanwhile, the power supply VCC is output.
As shown in fig. 5, the water meter motherboard 6 is further connected with a card reading circuit, where the card reading circuit includes a card_125k end, a push-pull amplifying circuit, an interface CON6, an LC oscillating circuit, a detection and amplitude limiting shaping circuit, an ardcheck end, a vc+ end, and a VC-end, the card_125k end inputs a low-frequency pulse string with a specific period, the low-frequency pulse string is push-pull amplified by the push-pull amplifying circuit composed of a resistor R4, a triode Q1, a resistor R16, and a resistor R17, and then inputted to the card reading coil 5 via the 2 end of the interface CON6, the card reading coil 5 and the capacitor C11 compose the LC oscillating circuit, and generates a certain oscillating signal, and after passing through the amplitude limiting shaping circuit composed of a diode D1, a resistor R6, a resistor R23, a R18, a capacitor C13, a capacitor C18, a capacitor C51, and a capacitor C52, the low-frequency pulse string is inputted to the corresponding port via the card detection, the vc+ end, and the VC-end to process and read information of a radio frequency card (user card, a management card, a charging card, a set card, etc.).
As a preferred implementation manner of this embodiment, as shown in fig. 6, the water meter motherboard 6 is further connected with a measurement interface, the measurement interface is connected with an MCU, and the measurement interface is compatible with an external measurement sensor, and the external measurement sensor may be a reed switch sensor or a magneto-resistive sensor. CON5 is the measurement sensor interface, and 1 foot is the power input, and 2 feet are the power negative input, and 3 feet are measurement signal A input, and 4 feet are measurement signal B input, and 5, 6 feet are the power negative terminal, and measurement signal A and B access MCU unit corresponding port.
As a preferred implementation manner of this embodiment, as shown in fig. 7, the water meter main board 6 is connected with a valve control unit, the valve control unit adopts a driving chip of a dc Motor with a model of BL8310, the driving chip, resistors R19, R20, R9, and capacitors C12 and C10 form a dc Motor driving circuit, the MCU controls forward/reverse rotation of the dc Motor through a motor_a and a motor_b end to drive the water meter valve body to realize valve opening/closing, CON7 is a welding interface of an external 5-wire valve, m+ and M-are dc Motor interfaces, ON is a valve opening signal, and OFF is a valve closing signal.
As a preferred implementation of this embodiment, as shown in fig. 8, the liquid crystal display 9 is a customized low-power-consumption and dedicated display, and 22 pins of COM0, COM1, COM2, COM3, S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S13, S14, S15, S16, S17 are connected to the MCU specific pin, so as to display real-time water consumption information (accumulation amount, water consumption amount, etc.) and real-time operation state of the water meter.
When the external wireless power supply module is close to the built-in wireless charging module of the water meter, the alternating high-frequency magnetic field is induced by the high-frequency electromagnetic wave generated by the transmitting coil of the external power supply module, the alternating high-frequency electromagnetic field induces high-frequency voltage signals with the same frequency and the same amplitude (voltage value) on the induction module of the built-in charging module, so that the induction conversion of electricity, magnetism and electricity is realized, and the high-frequency voltage signals are rectified and stabilized to output stable direct current voltage.
The stable direct current sent by the wireless charging module is output to the water meter main board, and the charging circuit (the charging circuit has current limiting and overcharge protection) charges a rechargeable battery (a high-density and small-size lithium battery), and the rechargeable battery is a power supply of the whole system and provides electric energy for the water meter main board and the electric valve.
When the water flow flows through the water meter metering module, the water flow drives the turbine of the part to rotate, the rotation of the turbine drives the gear mechanism to decelerate through the rotation shaft, the torque after deceleration drives the pulse metering unit to work, the pulse metering unit is a magneto-electric conversion circuit, the gear with a certain metering rotation speed (the rotation speed is in direct proportion to the water supply amount of the water meter) drives the rotary table fixed with metering small magnetic steel to rotate, the metering magnetic sensor (reed pipe or magnetic resistance) rotates a circle of magnetic sensor to output a metering pulse under the action of the rotating small magnetic steel, and the metering pulse is output to the water meter main board to count and meter.
The electric valve is controlled by the MCU of the water meter main board to perform valve opening and closing actions.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A wireless power supply's water gauge that charges which characterized in that: including casing, wireless mainboard that charges, water gauge mainboard, sensing module, rechargeable battery, card reading coil, valve body, valve electric actuator, water metering module of punching the card, wireless mainboard that charges, water gauge mainboard are all fixed in the casing, rechargeable battery is fixed on the water gauge mainboard, sensing module fixes on the casing, and is relative with wireless mainboard that charges, card reading coil is fixed in the casing, valve electric actuator fixes inside the casing, is connected with the valve body, the valve body is outside the casing, water metering module connects outside the casing and is connected with the valve body.
2. The wireless charging powered water meter of claim 1, wherein: an MCU is fixed on the main board of the water meter, and the MCU adopts HC32L136K8TA chip of Huada semiconductor company.
3. The wireless charging powered water meter of claim 1, wherein: the wireless charging main board is provided with a rectifier bridge, a filter circuit, a switching voltage stabilizing circuit and a connector CON2, an alternating voltage and current signal sent by the induction module is rectified by the rectifier bridge and then is output to be smooth direct current by the filter circuit, and the direct current is stabilized by the switching voltage stabilizing circuit and then is output to be 5V direct current power and is output by the connector CON 2.
4. A wireless charging powered water meter as defined in claim 3, wherein: the water meter is characterized in that a charging circuit, a connector CON3, a filter capacitor C20 and a power supply VCC are arranged on the water meter main board, the charging circuit is composed of a charging integrated chip, resistors R5, R7 and an LED3, the connector CON3 inputs the 5V direct current power supply, and the power supply VCC is input to the charging circuit to charge a rechargeable battery after being filtered and decoupled by the filter capacitor C20 and simultaneously outputs the power supply VCC.
5. The wireless charging powered water meter of claim 2, wherein: the water meter is characterized in that a card reading circuit is further connected to the water meter main board, the card reading circuit comprises a card_125K end, a push-pull amplifying circuit, an interface CON6, an LC oscillating circuit, a detection and amplitude limiting shaping circuit, an archeck end, a VC+ end and a VC-end, the card_125K end inputs a low-frequency pulse string with a specific period, the push-pull amplifying circuit composed of a resistor R4, a triode Q1, a resistor R16 and a resistor R17 is used for push-pull amplifying and then inputting the low-frequency pulse string to a card reading coil through a 2 end of the interface CON6, the card reading coil and a capacitor C11 form the LC oscillating circuit, and a certain oscillating signal is generated and then is input to the MCU through the Carcheck end, the VC+ end and the VC-end after passing through the detection and amplitude limiting shaping circuit composed of a diode D1, a resistor R6, a resistor R23, a resistor R18, a capacitor C51 and a capacitor C52.
6. The wireless charging powered water meter of claim 2, wherein: the water meter is characterized in that a metering interface is further connected to the water meter main board and connected with the MCU, the metering interface is compatible with an external metering sensor, and the external metering sensor can adopt a reed switch sensor or a magneto-resistance sensor.
7. The wireless charging powered water meter of claim 2, wherein: the water meter is characterized in that a valve control unit is connected to the water meter main board, the valve control unit adopts a driving chip of a direct current motor with the model BL8310, the driving chip, resistors R19, R20, R9 and capacitors C12 and C10 form a direct current motor driving circuit, and the MCU unit controls forward/reverse rotation of the direct current motor to drive a water meter valve body to realize valve opening/closing.
8. The wireless charging powered water meter of claim 2, wherein: the water meter further comprises a liquid crystal display screen, and the liquid crystal display screen is fixed on a water meter main board and connected with the MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320453637.0U CN219416320U (en) | 2023-03-07 | 2023-03-07 | Water meter with wireless charging and power supplying functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320453637.0U CN219416320U (en) | 2023-03-07 | 2023-03-07 | Water meter with wireless charging and power supplying functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219416320U true CN219416320U (en) | 2023-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320453637.0U Active CN219416320U (en) | 2023-03-07 | 2023-03-07 | Water meter with wireless charging and power supplying functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219416320U (en) |
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2023
- 2023-03-07 CN CN202320453637.0U patent/CN219416320U/en active Active
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