CN220208340U - Low-power consumption battery-powered prepayment valve-controlled water meter - Google Patents

Abstract

The utility model discloses a low-power consumption battery-powered prepayment valve control water meter, which belongs to the technical field of valve control water meters and comprises an acquisition module, a LoRa module, a power supply module and a valve control module; the power supply module is respectively connected with the LoRa module and the valve control module; the LoRa module is connected with the acquisition module and the valve control module respectively. The utility model solves the problems that remote meter reading can not be realized and the control of the water meter through the valve is not supported.

Description

Low-power consumption battery-powered prepayment valve-controlled water meter

Technical Field

The utility model belongs to the technical field of valve-controlled water meters, and particularly relates to a low-power consumption battery-powered prepayment valve-controlled water meter.

Background

With the acceleration of the urban and modern processes, the requirements of people on water resource management and use are higher and higher, so that in modern cities, effective management of water resources by adopting digital and automatic means is more and more necessary.

In the current market, although some water meters with automatic reading function can be found, the water meters do not have the function of remote control valve, and the situation is particularly prominent in large buildings or public places. In this case, the water meter staff needs to periodically check meter on site, which inevitably increases the workload and may also cause human negligence. In addition, although some water meters are provided with a remote reading function, under the condition of large water fees and arrears, the water supply cannot be automatically closed, and the problem of payment is caused.

Therefore, at the present stage, it is necessary to develop a water meter which has a remote meter reading function and can realize valve control, so as to reduce the cost of manpower and material resources to the minimum and realize reasonable utilization and protection of water resources. The novel water meter needs to adopt a digital technology, can be connected to a centralized control system, and realizes centralized control and management of equipment, thereby better meeting the requirements of people on water resource management.

Disclosure of Invention

The utility model provides a low-power consumption battery-powered prepayment valve control water meter, which solves the problems that remote meter reading cannot be realized and the water meter is not supported to be controlled through a valve.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a low-power consumption battery-powered prepayment valve control water meter, which comprises an acquisition module, a LoRa module, a power module and a valve control module, wherein the acquisition module is connected with the LoRa module;

the power supply module is respectively connected with the LoRa module and the valve control module; the LoRa module is respectively connected with the acquisition module and the valve control module;

the power supply module adopts an LDO chip U3 with the model of ldln 025;

the 1 st pin of the chip U3 is respectively connected with the 3 rd pin of the chip U3, the 2 nd pin of the wiring terminal CN1, the grounding capacitor C0 and the battery VBAT; the battery VBAT is connected with the valve control module; one end of the resistor R0 is connected with the battery VBAT; the other end of the resistor R0 is connected with the grounding resistor R1, the grounding capacitor C8 and the LoRa module respectively; the 2 nd pin of the chip U3 and the 1 st pin of the connecting terminal CN1 are grounded; the 5 th pin of the chip U3 is respectively connected with the grounding capacitor C1, the grounding capacitor C2, the LoRa module and the valve control module;

further, the LoRa module adopts a chip U1 with the model of S76S;

the 6 th pin of the chip U1 is connected with a grounding resistor R15; the 12 th pin of the chip U1 is connected with a grounding switch S2; the 13 th pin of the chip U1 is connected with the other end of the resistor R0; the 24 th pin and the 25 th pin of the chip U1 are respectively connected with the acquisition module; the 26 th pin, the 27 th pin and the 28 th pin of the chip U1 are respectively connected with the valve control module; the 43 rd pin and the 44 th pin of the chip U1 are respectively connected with the 5 th pin of the chip U3; the 59 th pin of the chip U1 is connected with a grounding resistor R17; the 2 nd pin, the 3 rd pin, the 14 th pin, the 15 th pin, the 31 st pin, the 32 nd pin, the 34 th pin, the 35 th pin, the 37 th pin, the 39 th pin, the 41 st pin, the 61 st pin and the 62 nd pin of the chip U1 are grounded;

the valve control module adopts a motor driving chip U2 of a DRV8832 model;

the 4 th pin of the chip U2 is connected with the grounding capacitor C9 and one end of the fuse F1 respectively; the other end of the fuse F1 is connected with a battery VBAT; the 8 th pin of the chip U2 is connected with one end of a resistor R8; the other end of the resistor R8 is respectively connected with the 7 th pin of the chip U2 and the grounding resistor R9; the 9 th pin of the chip U2 is connected with the 28 th pin of the chip U1; the 10 th pin of the chip U2 is connected with the 27 th pin of the chip U1; the 6 th pin of the chip U2 is respectively connected with one end of the resistor R10 and one end of the resistor R22; the other end of the resistor R10 is connected with the 5 th pin of the chip U3; the other end of the resistor R22 is connected with a 26 th pin of the chip U1; the 5 th pin and the 11 th pin of the chip U2 are grounded; the 2 nd pin of the chip U2 is connected with a grounding resistor R11; the 1 st pin of the chip U2 is respectively connected with one end of a bidirectional diode D1 and a motor of a water meter valve; the 3 rd pin of the chip U2 is respectively connected with one end of the bidirectional diode D2 and a motor of the water meter valve; the other end of the bidirectional diode D1 is grounded, and the other end of the bidirectional diode D2 is grounded.

Further, the battery VBAT is a lithium battery of 3.6V; the power supply module outputs a 3.3V voltage.

Further, the fuse F1 is a self-recovery fuse with the model of SMD0805B050 TF; the bidirectional diode D1 and the bidirectional diode D2 are both of the SD03C type.

Further, the acquisition module comprises a connection terminal CN2;

the 1 st pin of the wiring terminal CN2 is respectively connected with the 24 th pin of the chip U1 and a signal wire of a water meter base meter; the 2 nd pin of the wiring terminal CN2 is respectively connected with the 25 th pin of the chip U1 and a signal wire of a water meter base meter; and the 3 rd pin and the 4 th pin of the wiring terminal CN2 are grounded and are connected with a signal wire of the water meter base meter.

The beneficial effects of the utility model are as follows: (1) According to the utility model, the power supply module supplies power to the LoRa module and the valve control module, and the acquisition module acquires the water meter data, so that the water meter data acquisition function is realized. The LoRa module sends an instruction for opening or closing a water meter valve to the valve control module through collected water meter data, so that the function of valve control is realized. And meanwhile, the collected water meter data is sent to the server through the LoRa module. Therefore, the utility model solves the problems that remote meter reading can not be realized and the water meter is not supported to be controlled by the valve, and can automatically complete the data acquisition and reporting of the water meter, and the water charge hyperbranched, namely the valve closing and recharging, and the function of remotely opening the valve without personnel intervention;

(2) The LoRa module adopts a chip U1 with the model of S76S and has the functions of transmitting instructions, arithmetic operation, logic operation, data storage, wireless remote data transmission and the like. Therefore, the LoRa module can judge the collected data and send an instruction for opening or closing the water meter valve to the valve control module. Meanwhile, the LoRa module reports data to the server at regular time by sending the LoRa radio frequency signal, and executes a downlink command of the server. When the LoRa module does not execute work, the ultra-low power consumption working mode can be entered. Therefore, the utility model realizes the function of automatic data uploading and has the characteristic of ultra-low power consumption;

(3) The valve control module receives the signal from the LoRa module and controls the switch of the motor of the water meter valve through the signal, thereby realizing the function of automatically controlling the water meter valve.

Drawings

Fig. 1 is a schematic block diagram of a low power battery powered prepaid valved water meter of the present utility model.

Fig. 2 is a circuit diagram of a power module according to the present utility model.

Fig. 3 is a circuit diagram of the LoRa module of the present utility model.

Fig. 4 is a circuit diagram of a valve control module of the present utility model.

Fig. 5 is a circuit diagram of the acquisition module of the present utility model.

Detailed Description

Those of ordinary skill in the art will recognize that the embodiments described herein are for the purpose of aiding the reader in understanding the principles of the present utility model and should be understood that the scope of the utility model is not limited to such specific statements and embodiments. Those of ordinary skill in the art can make various other specific modifications and combinations from the teachings of the present disclosure without departing from the spirit thereof, and such modifications and combinations remain within the scope of the present disclosure.

Examples

As shown in FIG. 1, the utility model provides a low-power consumption battery-powered prepayment valve-controlled water meter, which comprises an acquisition module, a LoRa module, a power supply module and a valve-controlled module;

the power supply module is respectively connected with the LoRa module and the valve control module; the LoRa module is respectively connected with the acquisition module and the valve control module;

as shown in fig. 2, the power module adopts ldln025 type LDO chip U3;

the 1 st pin of the chip U3 is respectively connected with the 3 rd pin of the chip U3, the 2 nd pin of the wiring terminal CN1, the grounding capacitor C0 and the battery VBAT; the battery VBAT is connected with the valve control module; one end of the resistor R0 is connected with the battery VBAT; the other end of the resistor R0 is connected with the grounding resistor R1, the grounding capacitor C8 and the LoRa module respectively; the 2 nd pin of the chip U3 and the 1 st pin of the connecting terminal CN1 are grounded; the 5 th pin of the chip U3 is respectively connected with the grounding capacitor C1, the grounding capacitor C2, the LoRa module and the valve control module;

as shown in fig. 3, the LoRa module adopts a chip U1 with a model number of S76S;

the 6 th pin of the chip U1 is connected with a grounding resistor R15; the 12 th pin of the chip U1 is connected with a grounding switch S2; the 13 th pin of the chip U1 is connected with the other end of the resistor R0; the 24 th pin and the 25 th pin of the chip U1 are respectively connected with the acquisition module; the 26 th pin, the 27 th pin and the 28 th pin of the chip U1 are respectively connected with the valve control module; the 43 rd pin and the 44 th pin of the chip U1 are respectively connected with the 5 th pin of the chip U3; the 59 th pin of the chip U1 is connected with a grounding resistor R17; the 2 nd pin, the 3 rd pin, the 14 th pin, the 15 th pin, the 31 st pin, the 32 nd pin, the 34 th pin, the 35 th pin, the 37 th pin, the 39 th pin, the 41 st pin, the 61 st pin and the 62 nd pin of the chip U1 are grounded;

as shown in fig. 4, the valve control module adopts a motor driving chip U2 of model DRV 8832;

the 4 th pin of the chip U2 is connected with the grounding capacitor C9 and one end of the fuse F1 respectively; the other end of the fuse F1 is connected with a battery VBAT; the 8 th pin of the chip U2 is connected with one end of a resistor R8; the other end of the resistor R8 is respectively connected with the 7 th pin of the chip U2 and the grounding resistor R9; the 9 th pin of the chip U2 is connected with the 28 th pin of the chip U1; the 10 th pin of the chip U2 is connected with the 27 th pin of the chip U1; the 6 th pin of the chip U2 is respectively connected with one end of the resistor R10 and one end of the resistor R22; the other end of the resistor R10 is connected with the 5 th pin of the chip U3; the other end of the resistor R22 is connected with a 26 th pin of the chip U1; the 5 th pin and the 11 th pin of the chip U2 are grounded; the 2 nd pin of the chip U2 is connected with a grounding resistor R11; the 1 st pin of the chip U2 is respectively connected with one end of a bidirectional diode D1 and a motor of a water meter valve; the 3 rd pin of the chip U2 is respectively connected with one end of the bidirectional diode D2 and a motor of the water meter valve; the other end of the bidirectional diode D1 is grounded, and the other end of the bidirectional diode D2 is grounded.

The battery VBAT is a lithium battery with 3.6V; the power supply module outputs a 3.3V voltage.

The fuse F1 is a self-recovery fuse with the model of SMD0805B050 TF; the bidirectional diode D1 and the bidirectional diode D2 are both of the SD03C type.

As shown in fig. 5, the collecting module includes a connection terminal CN2;

the 1 st pin of the wiring terminal CN2 is respectively connected with the 24 th pin of the chip U1 and a signal wire of a water meter base meter; the 2 nd pin of the wiring terminal CN2 is respectively connected with the 25 th pin of the chip U1 and a signal wire of a water meter base meter; and the 3 rd pin and the 4 th pin of the wiring terminal CN2 are grounded and are connected with a signal wire of the water meter base meter.

In one embodiment of the utility model, the power module is used for performing voltage reduction output on the lithium battery. In the embodiment, the input voltage of the lithium battery with the voltage of 3.6V is stabilized to be output with the voltage of 3.3V through the power module, and the output voltage is provided for the LoRa module and the valve control module.

The LoRa module adopts a chip U1 with the model of S76S, an ARM chip with the model of STM32L73RZ is arranged in the chip U1, and a LoRa radio frequency chip with the model of SX1276 is arranged in the chip U1, and the built-in ARM chip and the LoRa radio frequency chip are connected inside the chip U1. The ARM chip has the functions of transmitting instructions, arithmetic operation, logic operation, data storage and the like, and the LoRa radio frequency chip can realize wireless long-distance data transmission.

In a specific working process, when the ARM chip in the LoRa module does not execute a task, the LoRa module automatically enters an ultra-low power consumption working mode. When the level in the water meter acquisition ports PB0_IO_INT1 and PB0_IO_INT2 of the connection acquisition module in the LoRa module changes, the LoRa module is awakened to acquire water meter data, and the acquired data are stored. And (3) carrying out logic operation by an arithmetic unit of an ARM chip in the LoRa module, judging the size of the water meter data and a preset specific value, and if the water meter data is larger than the preset specific value, sending a signal to the valve control module, and closing the water meter valve. The LoRa module after the processing enters an ultralow-power-consumption working mode.

Wherein, the ARM chip arithmetic unit performs logic operation as the prior art. The ARM chip arithmetic unit has two functions: one performs various arithmetic operations; and secondly, performing various logic operations and performing logic tests, such as zero value tests or comparison of two values. All operations performed by the operator are commanded by control signals issued by the ARM chip controller, and an arithmetic operation produces an operation result and a logic operation produces a decision.

Or when the RTC timer of the ARM chip in the LoRa module reaches a specific value, waking up the LoRa module. And the collected water meter data are sent to the server through a LoRa radio frequency chip in the LoRa module by using a LoRa radio frequency signal, and data reporting is carried out. After the data reporting is completed, the server sends a downlink command to the LoRa module, and when the LoRa module processes the downlink command, the LoRa module enters an ultralow-power-consumption working mode. The function is the self-contained function of the S76S chip U1 adopted by the LoRa module.

The 3.3V power provided by the power supply module is connected to the power supply input end of the valve control module after passing through the fuse F1. Meanwhile, the control input ends IN2 and IN1 of the chip U2 IN the valve control module are respectively connected with the valve control interfaces PC7 and PC8 of the chip U1 IN the LoRa module. And the control output ends OUT1 and OUT2 of the chip U2 in the valve control module are respectively connected to the bidirectional diode D1 and the bidirectional diode D2 and then connected to the motor of the water meter valve.

When the input level of the control input terminals IN1 and IN2 of the chip U2 IN the valve control module is low, the chip U2 enters a low power consumption mode. When the control input ends IN1 and IN2 of the chip U2 IN the valve control module respectively input high and low levels, the control output ends OUT1 and OUT2 of the chip U2 output PWM signals to drive the motor, so as to open the water meter valve. When the control input ends IN1 and IN2 of the chip U2 IN the valve control module input low and high levels respectively, the control output ends OUT1 and OUT2 of the chip U2 output PWM signals to drive the motor, so as to close the water meter valve.

In summary, the power module supplies power to the loRa module and the valve control module, and the acquisition module acquires water meter data. The LoRa module judges whether to open the water meter valve according to the collected water meter data and sends an instruction for opening or closing the water meter valve to the valve control module. Meanwhile, the LoRa module regularly transmits radio frequency signals to the server, performs data reporting, and executes a downlink command of the server. When the LoRa module does not execute work, the ultra-low power consumption working mode can be entered. Therefore, the utility model can automatically complete the data acquisition, reporting and water charge hyperbranched of the water meter, namely, the valve is closed, and the recharging can complete the function of remotely opening the valve without personnel intervention.

Claims (4)

1. The low-power consumption battery-powered prepayment valve-controlled water meter is characterized by comprising an acquisition module, a LoRa module, a power supply module and a valve-controlled module;

the power supply module is respectively connected with the LoRa module and the valve control module; the LoRa module is respectively connected with the acquisition module and the valve control module;

the power supply module adopts an LDO chip U3 with the model of ldln 025;

the 1 st pin of the chip U3 is respectively connected with the 3 rd pin of the chip U3, the 2 nd pin of the wiring terminal CN1, the grounding capacitor C0 and the battery VBAT; the battery VBAT is connected with the valve control module; one end of the resistor R0 is connected with the battery VBAT; the other end of the resistor R0 is connected with the grounding resistor R1, the grounding capacitor C8 and the LoRa module respectively; the 2 nd pin of the chip U3 and the 1 st pin of the connecting terminal CN1 are grounded; the 5 th pin of the chip U3 is respectively connected with the grounding capacitor C1, the grounding capacitor C2, the LoRa module and the valve control module;

the LoRa module adopts a chip U1 with the model of S76S;

the 6 th pin of the chip U1 is connected with a grounding resistor R15; the 12 th pin of the chip U1 is connected with a grounding switch S2; the 13 th pin of the chip U1 is connected with the other end of the resistor R0; the 24 th pin and the 25 th pin of the chip U1 are respectively connected with the acquisition module; the 26 th pin, the 27 th pin and the 28 th pin of the chip U1 are respectively connected with the valve control module; the 43 rd pin and the 44 th pin of the chip U1 are respectively connected with the 5 th pin of the chip U3; the 59 th pin of the chip U1 is connected with a grounding resistor R17; the 2 nd pin, the 3 rd pin, the 14 th pin, the 15 th pin, the 31 st pin, the 32 nd pin, the 34 th pin, the 35 th pin, the 37 th pin, the 39 th pin, the 41 st pin, the 61 st pin and the 62 nd pin of the chip U1 are grounded;

the valve control module adopts a motor driving chip U2 of a DRV8832 model;

the 4 th pin of the chip U2 is connected with the grounding capacitor C9 and one end of the fuse F1 respectively; the other end of the fuse F1 is connected with a battery VBAT; the 8 th pin of the chip U2 is connected with one end of a resistor R8; the other end of the resistor R8 is respectively connected with the 7 th pin of the chip U2 and the grounding resistor R9; the 9 th pin of the chip U2 is connected with the 28 th pin of the chip U1; the 10 th pin of the chip U2 is connected with the 27 th pin of the chip U1; the 6 th pin of the chip U2 is respectively connected with one end of the resistor R10 and one end of the resistor R22; the other end of the resistor R10 is connected with the 5 th pin of the chip U3; the other end of the resistor R22 is connected with a 26 th pin of the chip U1; the 5 th pin and the 11 th pin of the chip U2 are grounded; the 2 nd pin of the chip U2 is connected with a grounding resistor R11; the 1 st pin of the chip U2 is respectively connected with one end of a bidirectional diode D1 and a motor of a water meter valve; the 3 rd pin of the chip U2 is respectively connected with one end of the bidirectional diode D2 and a motor of the water meter valve; the other end of the bidirectional diode D1 is grounded, and the other end of the bidirectional diode D2 is grounded.

2. The low power battery-operated prepaid valved water meter of claim 1, wherein the battery VBAT is a 3.6V lithium battery; the power supply module outputs a 3.3V voltage.

3. The low power battery operated prepaid valved water meter of claim 1, wherein said fuse F1 is a self-healing fuse of the type SMD0805B050 TF; the bidirectional diode D1 and the bidirectional diode D2 are both of the SD03C type.

4. The low power battery operated prepaid valved water meter of claim 1, wherein the collection module includes a connection terminal CN2;

the 1 st pin of the wiring terminal CN2 is respectively connected with the 24 th pin of the chip U1 and a signal wire of a water meter base meter; the 2 nd pin of the wiring terminal CN2 is respectively connected with the 25 th pin of the chip U1 and a signal wire of a water meter base meter; and the 3 rd pin and the 4 th pin of the wiring terminal CN2 are grounded and are connected with a signal wire of the water meter base meter.