CN214627380U

CN214627380U - Intelligent gas meter system based on NFC communication

Info

Publication number: CN214627380U
Application number: CN202121144448.2U
Authority: CN
Inventors: 胡鑫鑫
Original assignee: Zhejiang Viewshine Intelligent Meter Co Ltd
Current assignee: Zhejiang Viewshine Intelligent Meter Co Ltd
Priority date: 2021-05-26
Filing date: 2021-05-26
Publication date: 2021-11-05
Anticipated expiration: 2031-05-26

Abstract

The utility model discloses an intelligent gas table system based on NFC communication, including table utensil and handheld intelligent terminal, the table utensil includes basic table, valve, MCU host system, metering module, power module, storage module and bluetooth module at least, and the basic table passes through metering module and is connected with MCU host system's input electricity, and power module is connected with MCU host system's input electricity, and storage module and bluetooth module are connected with MCU host system's two-way electricity respectively, and the valve is connected with MCU host system's output electricity, still includes the NFC module, thereby the MAC address that has bluetooth module in advance in the NFC module, and the NFC module is connected with MCU host system's two-way electricity, thereby handheld intelligent terminal opens bluetooth module and then establishes being connected between handheld intelligent terminal and the table utensil with triggering the NFC induction zone that is close to the table utensil. The utility model discloses a after triggering the communication of NFC module, this bluetooth module of lug connection need not to go again to search for bluetooth equipment and any key operation in order to realize the operation to the table utensil.

Description

Intelligent gas meter system based on NFC communication

Technical Field

The utility model relates to a gas table technical field, concretely relates to intelligent gas table system based on NFC communication.

Background

The mainstream gas meters in the current market comprise NB-IOT (network-based input/output) Internet of things gas, LORA (radio remote gas meter) wireless remote gas meters and IC (integrated circuit) card gas meters, and various products have respective characteristics and meet various problems in application, such as dependence on local signals, management of operators, complex operation and maintenance of spread spectrum meters and the like in the application of an Internet of things netlist. At present, the meter is recharged and read in a Bluetooth mode, and the following two points are mainly considered:

1. considering the service life of a gas meter battery, low power consumption processing is needed;

2. for promoting user's operation experience, bluetooth connection speed will be fast, and the bluetooth mode of opening will be convenient.

The prior art mainly has two schemes:

the first scheme is as follows: the bluetooth power is normally open, uses the bluetooth chip of low-power consumption to awaken up the broadcast regularly.

Scheme II: the Bluetooth is closed by default and is opened by key operation when needed.

However, the two schemes have the following defects respectively:

the first scheme is as follows: the meter consumes power all the time; the requirement on the Bluetooth chip is high, and the cost is also increased; connection to bluetooth is slower during low power consumption, and user experience is not good.

Scheme II: the Bluetooth needs to be manually opened, so that the Bluetooth is relatively troublesome and is not intelligent enough.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome not enough of above technique, provide an intelligent gas table system based on NFC communication.

The utility model overcomes the technical scheme that its technical problem adopted is:

the utility model provides an intelligent gas table system based on NFC communication, includes table utensil and handheld intelligent terminal, the table utensil includes base table, valve, MCU host system, metering module, power module, storage module and bluetooth module at least, the base table passes through metering module and is connected with MCU host system's input electricity, power module is connected with MCU host system's input electricity, storage module and bluetooth module are connected with MCU host system's two-way electricity respectively, the valve is connected with MCU host system's output electricity, still include the NFC module, thereby the MAC address of bluetooth module has been prestored in the NFC module, the NFC module is connected with MCU host system two-way electricity, thereby handheld intelligent terminal opens bluetooth module and establishes being connected between handheld intelligent terminal and the table utensil through the NFC induction zone that is close to the table utensil in order to trigger the NFC module.

Furthermore, the system also comprises a human-computer interaction module, wherein the human-computer interaction module is electrically connected with the output end of the MCU main control module.

Further, the Bluetooth module at least comprises a Bluetooth chip U1 and a Bluetooth power supply; the MCU main control module at least comprises an MCU chip U9; the NFC module includes at least an NFC chip U2 and an antenna.

Further, the Bluetooth power supply is controlled by the MCU chip U9 through the MOS tube Q1, and data interaction is performed between the Bluetooth chip U1 and the MCU chip U9 through pins TXD3 and RXD 3; one end of the NFC chip U2 is connected with the antennas IN1 and IN2, and the other end is connected with the MCU chip U9 through pins NFC _ INT, SCL, SDA and CSN.

Furthermore, the handheld intelligent terminal is a mobile phone or a tablet computer.

The utility model has the advantages that:

the utility model writes the MAC address of the Bluetooth module in the NFC module in advance, and after the NFC module is triggered to communicate, the Bluetooth module is directly connected to realize the operation of the meter, so that the Bluetooth device does not need to be searched, and the button operation is not needed, thereby being very convenient and fast; through the utility model, the meter is in an idle state most of the time, and the power consumption is not generated under the condition that the Bluetooth module does not work; the Bluetooth module can perform quick broadcast in the working state to quickly establish connection.

Drawings

Fig. 1 is the embodiment of the utility model provides an intelligent gas meter system's based on NFC functional block diagram.

Fig. 2 is a circuit diagram of the bluetooth chip according to the embodiment of the present invention.

Fig. 3 is a circuit diagram of the bluetooth power supply according to the embodiment of the present invention.

Fig. 4 is a circuit diagram of the MCU chip according to the embodiment of the present invention.

Fig. 5 is a circuit diagram of an NFC chip according to an embodiment of the present invention.

Fig. 6 is a circuit diagram of an antenna according to an embodiment of the present invention.

In the figure, the intelligent terminal comprises a handheld intelligent terminal 1, a base meter 2, a valve 3, a valve 4, an MCU main control module 5, a metering module 6, a power supply module 7, a storage module 8, a Bluetooth module 9, an NFC module 10 and a human-computer interaction module.

Detailed Description

In order to facilitate better understanding of the present invention for those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments, which are given by way of illustration only and thus do not limit the scope of the present invention.

As shown in fig. 1, this embodiment an intelligent gas meter system based on NFC communication, including table utensil and handheld intelligent terminal 1, the table utensil includes base table 2, valve 3, MCU host module 4, metering module 5, power module 6, storage module 7 and bluetooth module 8 at least, base table 2 is connected with MCU host module 4's input electricity through metering module 5, power module 6 is connected with MCU host module 4's input electricity, storage module 7 and bluetooth module 8 are connected with MCU host module 4 two-way electricity respectively, valve 3 is connected with MCU host module 4's output electricity, in this embodiment, handheld intelligent terminal 1 is the cell-phone preferably.

As the place where the present embodiment is improved to the greatest extent, the NFC module 9 is further included, the MAC address of the bluetooth module is prestored in the NFC module 9, that is, the MAC address of the bluetooth module 8 is written into the NFC module 9 before the meter leaves the factory, and the NFC module 9 is electrically connected to the MCU master control module 4 in a bidirectional manner.

In this embodiment, the bluetooth module 8 at least includes a bluetooth chip U1 and a bluetooth power supply, as shown in fig. 2 and 3; the MCU main control module 4 at least comprises an MCU chip U9, as shown in fig. 4; the NFC module 9 includes at least an NFC chip U2 and an antenna, as shown in fig. 5 and 6. The handheld intelligent terminal 1 triggers the NFC module 9 to simultaneously turn on the Bluetooth power supply through an NFC induction area close to the meter, namely the Bluetooth module 8 is turned on, then the handheld intelligent terminal 1 acquires the MAC address of the Bluetooth module from the NFC module 9 so as to establish connection between the handheld intelligent terminal 1 and the meter, and services such as recharging, meter reading and the like can be carried out after the connection. The Bluetooth module 8 is always in a power-off state at ordinary times, and the NFC module 9 is awakened by a near magnetic field, so that the Bluetooth module and the NFC module do not consume any power consumption in standby; the Bluetooth module 8 enters a fast broadcast mode when working, so that the handheld intelligent terminal 1 can be connected with Bluetooth quickly and automatically.

Preferably, the intelligent gas meter system based on NFC communication described in this embodiment further includes a human-computer interaction module 10, and the human-computer interaction module 10 is electrically connected to the output end of the MCU main control module 4.

Specifically, as shown in fig. 2-6, the bluetooth power supply is controlled by the MCU chip U9 through the MOS transistor Q1, and data interaction is performed between the bluetooth chip U1 and the MCU chip U9 through the pins TXD3 and RXD 3; one end of the NFC chip U2 is connected with the antennas IN1 and IN2, and the other end of the NFC chip U2 is connected with the MCU chip U9 through pins NFC _ INT, SCL, SDA and CSN; when the antenna receives an external signal, the pin NFC _ INT is interrupted to inform the MCU chip U9 of data interaction, and SCL and SDA transmit data through an IIC interface.

After the handheld intelligent terminal 1 approaches an NFC induction area of a meter, triggering an NFC _ INT interrupt pin; after the MCU chip U9 detects that the falling edge is interrupted, the VDD _ BLE _ CTL is controlled to output a low level, after the Q1 is conducted, the Bluetooth power supply is turned on, and the Bluetooth module enters a fast broadcasting state after being powered on; after time out, the MCU chip U9 controls the VDD _ BLE _ CTL to output high level, the Q1 is cut off, and the Bluetooth power supply is turned off to save power consumption.

The foregoing has described only the basic principles and preferred embodiments of the present invention and numerous changes and modifications may be made by those skilled in the art in light of the above teachings and shall fall within the scope of the present invention.

Claims

1. The utility model provides an intelligent gas table system based on NFC communication, includes table utensil and handheld intelligent terminal, the table utensil includes base table, valve, MCU host system, metering module, power module, storage module and bluetooth module at least, the base table passes through metering module and is connected with MCU host system's input electricity, power module is connected with MCU host system's input electricity, storage module and bluetooth module are connected with MCU host system's two-way electricity respectively, the valve is connected with MCU host system's output electricity, a serial communication port, still include the NFC module, thereby the MAC address of bluetooth module has been prestored in the NFC module, and the NFC module is connected with MCU host system two-way electricity, thereby handheld intelligent terminal opens bluetooth module and establishes being connected between handheld intelligent terminal and the table utensil through the NFC induction zone that is close to the table utensil in order to trigger the NFC module.

2. The NFC communication-based intelligent gas meter system according to claim 1, further comprising a human-computer interaction module, wherein the human-computer interaction module is electrically connected with an output end of the MCU master control module.

3. The NFC communication-based intelligent gas meter system according to claim 1 or 2, wherein the Bluetooth module at least comprises a Bluetooth chip U1 and a Bluetooth power supply; the MCU main control module at least comprises an MCU chip U9; the NFC module includes at least an NFC chip U2 and an antenna.

4. The NFC-communication-based intelligent gas meter system according to claim 3, wherein the Bluetooth power supply is controlled by an MCU chip U9 through an MOS tube Q1, and data interaction is performed between the Bluetooth chip U1 and the MCU chip U9 through pins TXD3 and RXD 3; one end of the NFC chip U2 is connected with the antennas IN1 and IN2, and the other end is connected with the MCU chip U9 through pins NFC _ INT, SCL, SDA and CSN.

5. The NFC communication-based intelligent gas meter system according to claim 1, wherein the handheld intelligent terminal is a mobile phone or a tablet computer.