Multi-channel fused intelligent meter reading system

Abstract

The utility model relates to the technical field of meter reading systems, solves the technical problems that the existing single communication module cannot meet various different network environments and the data transmission reliability is reduced, and particularly relates to a multi-channel fused intelligent meter reading system, which comprises an uplink module and a microcontroller module used for selecting a meter reading data transmission mode, the microcontroller module is externally connected with an uplink module used for transmitting meter reading data in a mode selected by the microcontroller module, the uplink module comprises an NB-IoT circuit, an LTE circuit and a 5G circuit, and the NB-IoT circuit comprises an NB-IoT module, a 5V external power supply, a detection module and a wireless module. According to the utility model, various communication modes of the uplink module can be compatible through the standard interface design of the microcontroller, so that the system can adapt to various different network environments, smooth switching is carried out at the same time, the switching cost of the system can be reduced, and the working efficiency of the system switching module and adaptation to different network environments is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of meter reading systems, and particularly relates to an intelligent meter reading system with multi-channel fusion. Background Art

[0002] A meter reading system generally refers to a system that uses modern communication technologies to automatically collect, transmit, and process data of metering instruments. With the development of Internet of Things technology, intelligent meter reading devices have been widely used. Traditional infrared meter reading devices usually only support a single wireless communication technology, such as NB-IoT, LTE, etc. This limits their adaptability in changing network environments. Especially in some remote mountainous areas, a single communication module may have poor signal here, or even this area does not support a certain communication module. And in some network environments, the communication reliability of the device is low, and the communication performance drops significantly. In addition, with the popularization of 5G networks, there is an urgent need in the market for an infrared meter reading device that can be compatible with multiple wireless communication technologies to adapt to different network environments and application scenarios. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides an intelligent meter reading system with multi-channel fusion, which solves the technical problem that the existing single communication module cannot meet multiple different network environments and reduces the reliability of data transmission, and achieves the purpose of meeting multiple network environments through multiple communication modules and ensuring the reliability of data transmission.

[0004] To solve the above technical problems, the utility model provides the following technical solution: an intelligent meter reading system with multi-channel fusion, including a microcontroller module for selecting the meter reading data transmission method, and an uplink module externally connected to the microcontroller module for transmitting the meter reading data in the manner selected by the microcontroller module. The uplink module includes an NB-IoT circuit, an LTE circuit, and a 5G circuit.

[0005] Preferably, the NB-IoT circuit is composed of an NB-IoT module, a 5V external power supply, a detection module, and a wireless module. The wireless module is connected to the 27th port of the NB-IoT module through a resistor R11, and the IO, 8, 7, and 6 ports of the wireless module are respectively connected to the 14th, 15th, 12th, and 13th ports of the NB-IoT module. The 5V external power supply is connected to the 32nd port of the NB-IoT module.

[0006] Preferably, one output terminal of the detection module is connected to the emitter of transistor Q2. The base of transistor Q2 is connected to the VDD_EXT port of the NB-IoT module through resistor R3. The other output terminal of the detection module is connected to the collector of transistor Q3. The base of transistor Q3 is connected in parallel with resistor R3 through resistor R5. The emitter of transistor Q2 is connected in parallel to the UART1_TXD port of the NB-IoT module. The collector of transistor Q3 is connected in parallel to the UART1_RXD port of the NB-IoT module. Transistor Q1 is also connected in parallel with resistor R3.

[0007] Preferably, the LTE circuit includes an LTE module, and the structure of the LTE circuit except for the LTE module is the same as that of the NB-IoT circuit.

[0008] Preferably, the 5G circuit consists of a 5G module and a SIM card connector. The USIM_VDD and USIM_DET ports of the 5G module are respectively connected to the VCC and CD ports of the SIM card connector. The USIM_RST, USIM_CLK, and USIM_DATD ports of the 5G module are respectively connected to the RST, CLK, and IO ports of the SIM card connector through resistors R8, R9, and R10. The USIM_VDD port of the 5G module is connected in parallel with resistors R7 and capacitor C13, and resistor R7 is connected in parallel with the USIM_DATD port. The USIM_RST port of the 5G module is connected in parallel with capacitor C12. The USIM_CLK port of the 5G module is connected in parallel with capacitor C11. The USIM_DATD port of the 5G module is connected in parallel with capacitor C10. The VCC, RST, CLK, CD, and IO ports of the SIM card connector are respectively connected in parallel with the interfaces of transient voltage suppression diodes.

[0009] Preferably, an infrared sensor and a power management module are further provided outside the meter reading system. The infrared sensor is used to send a meter reading protocol signal to the signal receiver on the electric meter, receive the feedback meter reading protocol data and parse it into the meter reading data of the electric meter, and send the meter reading data to the microcontroller module. The infrared sensor is communicatively connected to the microcontroller module. The power management module is used to supply power to the microcontroller module, the uplink module, and the infrared sensor. The power management module has multiple working states and multiple power consumption modes matching the multiple working states.

[0010] Preferably, the power management module consists of an output terminal and a single-pole triple-throw switch. The single-pole triple-throw switch has three power supply terminals A, B, and C. Power supply terminal A is sequentially connected in series with resistor R51 and a 24V power supply. Power supply terminal B is sequentially connected in series with resistor R52 and a 12V power supply. Resistors R53 and capacitor C51 are respectively connected in parallel between power supply terminal A and power supply terminal B. Power supply terminal C is sequentially connected in series with resistor R54 and a 6V power supply. Capacitor C52 is connected in parallel with power supply terminal C.

[0011] Preferably, the model of the NB-IoT module is MN316, the model of the LTE module is SIM868, the model of the 5G module is SRM815GL, the model of the microcontroller chip is FM33LC046N, and the model of the infrared sensor is LF0038Y.

[0012] By means of the above technical solution, the present utility model provides a multi-channel fusion intelligent meter reading system, which has at least the following beneficial effects:

[0013] 1. Through the action of the uplink module, the present utility model can complete the compatibility of the NB-IoT module, the LTE module and the 5G module, so that the intelligent meter reading system can adapt to a variety of different network environments. At the same time, with the microcontroller module to smoothly switch the transmission mode of the meter reading data, the switching cost of the system can be reduced, the working efficiency of the system switching module can be improved, and the meter reading system can adapt to different network environments, making the data transmission more stable and smooth.

[0014] 2. Through the monitoring of the network status by the microcontroller module, the present utility model can always obtain the quality of the current network status, and select a network with better quality for data transmission according to the network status. This not only increases the reliability of communication, but also improves the quality of data transmission, avoiding the interruption of meter reading data transmission.

[0015] 3. Through the action of the power management module, the present utility model can switch the corresponding power consumption mode under different working modes of the system, greatly reducing the power consumption of the system, increasing the service life of the battery, and saving the cost of replacing the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation of the present application. In the drawings:

[0017] Figure 1 is a structural block diagram of a multi-channel fusion intelligent meter reading system of the present utility model;

[0018] Figure 2 is a circuit diagram of the microcontroller module of the present utility model;

[0019] Figure 3 is a circuit diagram of the left part of the microcontroller module of the present utility model;

[0020] Figure 4 is a circuit diagram of the chip part of the microcontroller module of the present utility model;

[0021] Figure 5The circuit diagram of the right part of the microcontroller module of the present utility model;

[0022] Figure 6 The circuit diagram of the overall NB-IoT module of the present utility model;

[0023] Figure 7 The circuit diagram of the left part of the NB-IoT module of the present utility model;

[0024] Figure 8 The circuit diagram of the right part of the NB-IoT module of the present utility model;

[0025] Figure 9 The circuit diagram of the LTE module of the present utility model;

[0026] Figure 10 The circuit diagram of the 5G module of the present utility model;

[0027] Figure 11 The circuit diagram of the power management module of the present utility model;

[0028] Figure 12 The operation schematic diagram of multiple states of the power management module of the present utility model;

[0029] Figure 13 The flowchart of the monitoring method of the microcontroller module of the present utility model.

[0030] In the figure: 1. Microcontroller module; 2. Uplink module; 21. NB-IoT module; 22. LTE module; 23. 5G module; 3. Infrared sensor; 4. Power management module. Detailed implementation manners

[0031] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below with reference to the drawings and specific implementation manners. Thus, the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0032] Due to the technical problem that the existing single communication module cannot meet multiple different network environments and reduces the reliability of data transmission, please refer to Figure 1 - Figure 13 , this embodiment provides a multi-channel fusion intelligent meter reading system, which can meet multiple network environments through multiple communication modules and ensure the reliability of data transmission. The intelligent meter reading system includes a microcontroller module 1 for selecting the data transmission method of meter reading, and an uplink module 2 connected to the outside of the microcontroller module 1 for transmitting the meter reading data in the manner selected by the microcontroller module 1. The uplink module 2 includes an NB-IoT circuit 21, an LTE circuit 22 and a 5G circuit 23;

[0033] The uplink module 2 includes an NB-IoT circuit 21, an LTE circuit 22, and a 5G circuit 23. The NB-IoT circuit 21 consists of an NB-IoT module, a 5V external power supply, a detection module, and a wireless module. The wireless module is connected to the 27th port of the NB-IoT module through a resistor R11, and the IO, 8, 7, and 6 ports of the wireless module are respectively connected to the 14th, 15th, 12th, and 13th ports of the NB-IoT module. The 5V external power supply is connected to the 32nd port of the NB-IoT module. One output terminal of the detection module is connected to the emitter of a triode Q2. The base of the triode Q2 is connected to the VDD_EXT port of the NB-IoT module through a resistor R3. The other output terminal of the detection module is connected to the collector of a triode Q3. The base of the triode Q3 is connected in parallel with the resistor R3 through a resistor R5. The emitter of the triode Q2 is connected in parallel to the UART1_TXD port of the NB-IoT module. The collector of the triode Q3 is connected in parallel to the UART1_RXD port of the NB-IoT module. A triode Q1 is also connected in parallel with the resistor R3. The model of the NB-IoT module is MN316.

[0034] The LTE circuit 22 includes an LTE module. The structure of the LTE circuit 22 except for the LTE module is the same as that of the NB-IoT circuit 21. The 5G circuit 23 consists of a 5G module and a SIM card connector. The USIM_VDD and USIM_DET ports of the 5G module are respectively connected to the VCC and CD ports of the SIM card connector. The USIM_RST, USIM_CLK, and USIM_DATD ports of the 5G module are respectively connected to the RST, CLK, and IO ports of the SIM card connector through resistors R8, R9, and R10. The USIM_VDD port of the 5G module is respectively connected in parallel with a resistor R7 and a capacitor C13, and the resistor R7 is connected in parallel with the USIM_DATD port. The USIM_RST port of the 5G module is connected in parallel with a capacitor C12. The USIM_CLK port of the 5G module is connected in parallel with a capacitor C11. The USIM_DATD port of the 5G module is connected in parallel with a capacitor C10. The VCC port, RST port, CLK port, CD port, and IO port of the SIM card connector are respectively connected in parallel with the interfaces of transient voltage suppression diodes. The model of the LTE module is SIM868, and the model of the 5G module is SRM815GL.

[0035] In the present utility model, a high-performance microcontroller is adopted. The mcu used in this embodiment is the Fudan Micro FM33LC046N model. Please refer to Figure 2 - Figure 5 , which supports high-speed data processing capabilities and can quickly respond to changes in the network environment. It has several key software modules: a multi-channel management module, an infrared electricity meter protocol encoding and decoding module. Please refer to Figure 13, the working steps of the multi-channel management module are as follows: S1, detect whether the NB-IoT module 21, LTE module 22, and 5G module 23 are in a normal working state; S2, add them to the channel management list; S3, monitor the network signals of the current module, including strength, quality, and stability, and obtain the current detection values; S4, determine whether the current detection values become worse; if so, switch to the next module and return to S3; if not, maintain the network signals of the current module and turn off other modules; S5, end the steps; through the monitoring of the network status by the microcontroller module, the current network status can be obtained at all times. By selecting a network with better quality according to the network status, not only the communication reliability is increased, but also the data transmission quality is improved, avoiding the interruption during the data transmission of the meter reading. The functions of the three modules in the uplink module 2 are as follows: the NB-IoT module 21 is used to transmit the meter reading data collected by the infrared sensor over a long distance under low-power conditions, and the model of the NB-IoT module 21 is MN316 of China Mobile; the LTE module 22 is used to transmit the meter reading data collected by the infrared sensor over a medium distance under medium-power conditions, and the model of the LTE module 22 is SIM868 of SIMCom;The 5G module 23 is used to transmit meter reading data in a high-bandwidth, low-latency and short-distance manner under high-power consumption conditions. The model of the 5G module 23 is Megar SRM815GL. After the microcontroller module 1 performs network detection, a communication module is determined and an instruction is sent to the uplink module 2. Then, the uplink module 2 makes a conversion according to the instruction of the microcontroller module 1. The uplink module 2 has three different communication modules. Among them, the wireless module of the NB-IoT module 21 consists of two modules. The NB-IoT module 21 can perform long-distance transmission and has very low power consumption, making it suitable for use in remote mountainous areas without 5G base stations. The 5G module 23 is suitable for use under high power consumption and with a relatively high density of 5G base stations. It has a faster data transmission speed and stable signal. The power consumption and transmission distance of the LTE module 22 are between those of the NB-IoT module 21 and the 5G module 23. Through the function of the uplink module, compatibility with the NB-IoT module, LTE module and 5G module can be achieved, enabling the intelligent meter reading system to adapt to a variety of different network environments. At the same time, in combination with the microcontroller module for smooth switching, the switching cost of the system can be reduced, and the working efficiency of the system switching module and its adaptation to different network environments can be improved. Through the function of the uplink module, compatibility with the NB-IoT module 21, LTE module 22 and 5G module 23 can be achieved, enabling the intelligent meter reading system to adapt to a variety of different network environments. At the same time, in combination with the microcontroller module for smooth switching of the transmission mode of the meter reading data, the switching cost of the system can be reduced, the working efficiency of the system switching module can be improved, and the meter reading system can be adapted to different network environments, making the data transmission more stable and smooth. Through the monitoring of the network status by the microcontroller module, the quality of the current network status can be obtained at all times. By selecting a network with better quality based on the network status, not only the reliability of communication is increased, but also the quality of data transmission is improved, avoiding the interruption of meter reading data transmission.;

[0036] Since the power supply of the existing meter reading system generally has only a single working state and cannot adapt to multiple power consumption modes, the battery life is also significantly shortened due to being in a working state for a long time. To solve this problem, please refer to Figure 11 and Figure 12, an infrared sensor 3 is also provided outside the meter reading system, which is used to receive the meter reading data fed back by the electric meter and send the meter reading data to the microcontroller module 1. The infrared sensor 3 is communicatively connected to the microcontroller module 1, and a power management module 4 is used to supply power to the microcontroller module 1, the uplink module 2, and the infrared sensor 3. The power management module 4 has multiple working states and multiple power consumption modes matching the multiple working states. The power management module 4 consists of an output terminal and a single-pole triple-throw switch. The single-pole triple-throw switch has three power supply terminals A, B, and C. The power supply terminal A is sequentially connected in series with a resistor R51 and a 24V power supply. The power supply terminal B is sequentially connected in series with a resistor R52 and a 12V power supply. A resistor R53 and a capacitor C51 are respectively connected in parallel between the power supply terminal A and the power supply terminal B. The power supply terminal C is sequentially connected in series with a resistor R54 and a 6V power supply, and a capacitor C52 is connected in parallel to the power supply terminal C. The model of the infrared sensor is LF0038Y.

[0037] The power management module 4 of the present utility model is also called a state machine. The power consumption management of the power management module 4 is realized by controlling the working and sleeping time of the entire intelligent meter reading system and selecting the appropriate uplink module 2 under different environmental signal conditions. And according to the different transmission methods of the NB-IoT circuit 21, the LTE circuit 22, and the 5G circuit 23 in the uplink module 2, it switches to the power consumption management method of the power consumption mode matching them.

[0038] The power management module 4 has a matching UI, that is, an operation interface. Please refer to Figure 12 , the power button of the power management module 4 can control the single-pole triple-throw switch. When the power button is pressed, or when the timer time arrives, it wakes up from the sleep state to the idle state; if the button is long-pressed, it enters the working state; if the button is clicked more than three times, it enters the configuration state. It has multiple working modes and matching power consumption modes, including:

[0039] Sleep mode: Corresponding to the sleep state, it is the mode with the lowest overall power consumption of the whole machine. It will turn off all radio frequency modules and let the MCU enter the ultra-low power consumption mode;

[0040] Idle mode: Corresponding to the idle state, at this time the radio frequency module is turned off, and the MCU processes basic UI functions, and the power consumption is relatively small;

[0041] High-speed mode: The radio frequency module is turned on, the MCU runs at high speed, with high processing performance and large power consumption. Such a function can adapt to the power consumption of different communication modules. For example, when using the NB-IoT module 21, the power supply will be adjusted to a lower power consumption in the working mode. Such a function can switch the corresponding power consumption mode under different working modes of the system, greatly reducing the power consumption of the system, increasing the service life of the battery, and saving the cost of replacing the battery.

[0042] The above embodiments have introduced the present utility model in detail. Specific examples are used in this text to elaborate on the principle and embodiments of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. An intelligent meter reading system with multi-channel fusion, including a microcontroller module (1) for selecting the data transmission mode of meter reading, characterized in that, An uplink module (2) for transmitting the meter reading data in the manner selected by the microcontroller module (1) is externally connected to the microcontroller module (1). The uplink module (2) includes an NB-IoT circuit (21), an LTE circuit (22), and a 5G circuit (23). The NB-IoT circuit (21) consists of an NB-IoT module, an external 5V power supply, a detection module, and a wireless module. The wireless module is connected to the 27th port of the NB-IoT module through a resistor R11, and the IO, 8, 7, and 6 ports of the wireless module are respectively connected to the 14th, 15th, 12th, and 13th ports of the NB-IoT module. The external 5V power supply is connected to the 32nd port of the NB-IoT module. One output terminal of the detection module is connected to the emitter of a triode Q2. The base of the triode Q2 is connected to the VDD_EXT port of the NB-IoT module through a resistor R3. The other output terminal of the detection module is connected to the collector of a triode Q3. The base of the triode Q3 is connected in parallel with the resistor R3 through a resistor R5. The emitter of the triode Q2 is connected in parallel to the UART1_TXD port of the NB-IoT module. The collector of the triode Q3 is connected in parallel to the UART1_RXD port of the NB-IoT module. A triode Q1 is also connected in parallel with the resistor R3.

2. The intelligent meter reading system according to claim 1, wherein The LTE circuit (22) includes an LTE module. The structure of the LTE circuit (22) except for the LTE module is the same as that of the NB-IoT circuit (21).

3. The intelligent meter reading system according to claim 1, wherein The 5G circuit (23) consists of a 5G module and a SIM card connector. The USIM_VDD and USIM_DET ports of the 5G module are respectively connected to the VCC and CD ports of the SIM card connector. The USIM_RST, USIM_CLK, and USIM_DATD ports of the 5G module are respectively connected to the RST, CLK, and IO ports of the SIM card connector through resistors R8, R9, and R10. The USIM_VDD port of the 5G module is respectively connected in parallel with a resistor R7 and a capacitor C13, and the resistor R7 is connected in parallel with the USIM_DATD port. The USIM_RST port of the 5G module is connected in parallel with a capacitor C12. The USIM_CLK port of the 5G module is connected in parallel with a capacitor C11. The USIM_DATD port of the 5G module is connected in parallel with a capacitor C10. The VCC port, RST port, CLK port, CD port, and IO port of the SIM card connector are respectively connected in parallel with the interfaces of transient voltage suppression diodes.

4. The intelligent meter reading system according to claim 1, wherein An infrared sensor (3) and a power management module (4) are further provided outside the meter reading system. The infrared sensor (3) is used to receive the meter reading data fed back by the electric meter and send the meter reading data to the microcontroller module (1). The infrared sensor (3) is communicatively connected to the microcontroller module (1). The power management module (4) is used to supply power to the microcontroller module (1), the uplink module (2), and the infrared sensor (3). The power management module (4) has multiple working states and multiple power consumption modes matching the multiple working states.

5. The intelligent meter reading system according to claim 4, wherein The power management module (4) consists of an output terminal and a single-pole triple-throw switch. The single-pole triple-throw switch has three power supply terminals A, B, and C. A resistor R51 and a 24V power supply are connected in series in sequence at the power supply terminal A. A resistor R52 and a 12V power supply are connected in series in sequence at the power supply terminal B. A resistor R53 and a capacitor C51 are connected in parallel between the power supply terminal A and the power supply terminal B. A resistor R54 and a 6V power supply are connected in series in sequence at the power supply terminal C. A capacitor C52 is connected in parallel at the power supply terminal C.

6. The intelligent meter reading system according to claim 1, wherein The model of the NB-IoT module is MN316, the model of the LTE module is SIM868, the model of the 5G module is SRM815GL, the model of the microcontroller chip is FM33LC046N, and the model of the infrared sensor is LF0038Y.

Images