Water and electricity meter data collector based on M-BUS, RS485 and 4G communication

Abstract

The utility model is suitable for the technical field of Internet of Things communication, and relates to a water and electricity meter data collector based on M-BUS, RS485 and 4G communication, which comprises a control circuit board and a power supply circuit board in communication connection, the control circuit board is provided with an MCU control circuit, a 4G communication circuit, an RS485 communication circuit and an M-BUS communication circuit. The 4G communication circuit, the RS485 communication circuit and the M-BUS communication circuit are in communication connection with the MCU control circuit. The power supply circuit board is provided with a main power supply circuit, and the power supply is in communication connection with the MCU control circuit. The data acquisition device is high in integration rate and convenient in acquisition, can simultaneously acquire data of the water meter and the electricity meter, and further improves the convenience of remote monitoring.

Description

Technical Field

[0001] The utility model belongs to the technical field of Internet of Things communication, and particularly relates to a water and electricity meter data collector based on M-BUS, RS485 and 4G communication. Background Technique

[0002] At present, when it is necessary to collect and maintain the data of a large number of water meters and electricity meters at the same time, the following technical problems are often faced: the communication protocols are inconsistent, different types of devices use different communication protocols, resulting in an increase in the communication complexity between the platform and the lower-level devices; the communication methods are diverse, the water meter communication uses the M-BUS method, while the electricity meter communication uses the RS485 communication method, and it is difficult to implement the processing of multiple communication methods on the same collector; the collection method is complex, the traditional collection method often requires manual on-site meter reading, which is time-consuming and laborious. In addition, under the traditional device communication mode, remote monitoring and management are difficult.

[0003] The patent application with the publication number of CN111681402A provides a 4G water meter collector based on M-BUS with high security. The M-BUS receiving circuit is arranged between the control unit and the M-BUS overcurrent protection circuit and is used to connect the control unit and the M-BUS overcurrent protection circuit. The base of the triode Q2 is controlled by the single-chip microcomputer to enable the Schmitt trigger. When it is necessary to receive M-BUS data, this pin will be enabled. The triode Q4 controls the adjustment voltage of the ADJ pin of the regulator U1 to be about 15VDC. The diode D2 and the capacitor isolate the 32VDC voltage. That is, when the input 12VDC power supply fluctuates, it will not affect the MBUS communication within the time of the mS level. This patent only realizes the data collection of the water meter through M-BUS communication, and does not disclose the relevant technical solutions for the data collection of the electricity meter. Like the prior art, it does not simultaneously realize the data collection and maintenance of the water meter and electricity meter devices.

[0004] Therefore, how to provide a data collector with high integration rate and convenient collection, which can simultaneously collect the data of water meters and electricity meters, is an urgent problem to be solved by those skilled in the art. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a water and electricity meter data collector based on M-BUS, RS485 and 4G communication, so as to solve the problems of low integration rate of the collector in the prior art, inability to simultaneously collect the data of water meters and electricity meters, or inconvenience in simultaneous collection.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The utility model provides a water and electricity meter data collector based on M-BUS, RS485 and 4G communications, comprising:

[0008] A control circuit board and a power supply circuit board which are communicatively connected;

[0009] An MCU control circuit, a 4G communication circuit, an RS485 communication circuit and an M-BUS communication circuit are provided on the control circuit board, and the 4G communication circuit, the RS485 communication circuit and the M-BUS communication circuit are respectively communicatively connected with the MCU control circuit;

[0010] A main power supply circuit is provided on the power supply circuit board, and the power supply is communicatively connected with the MCU control circuit.

[0011] Furthermore, an EEPROM / FLASH circuit is further included, and the EEPROM / FLASH circuit is communicatively connected with the MCU control circuit.

[0012] Furthermore, a 4G communication power supply sub-circuit is further provided on the control circuit board, and the 4G communication circuit and the 4G communication power supply sub-circuit are respectively communicatively connected.

[0013] Furthermore, an M-BUS communication power supply sub-circuit is further provided on the control circuit board, and the M-BUS communication circuit and the M-BUS communication power supply sub-circuit are respectively communicatively connected.

[0014] Furthermore, an RS485 communication power supply sub-circuit is further provided on the control circuit board, and the RS485 communication circuit and the RS485 communication power supply sub-circuit are respectively communicatively connected.

[0015] Furthermore, the RS485 communication circuit is used for communicating with electricity meters and supports connecting with 32 electricity meters simultaneously.

[0016] Furthermore, the M-BUS communication circuit is used for communicating with water meters and supports connecting with 32 water meters simultaneously.

[0017] Compared with the prior art, the water and electricity meter data collector based on M-BUS, RS485 and 4G communications provided by the utility model has at least the following beneficial effects:

[0018] When collecting and maintaining data of a large number of water meters and electricity meters simultaneously, there is a problem of inconsistent communication protocols, which increases the communication complexity between the platform and lower-level devices. In addition, the water meter communication uses the M-BUS method, while the electricity meter communication uses the RS485 communication method. It is difficult to implement the processing of multiple communication methods on the same collector. The traditional collection method often requires manual on-site meter reading, which is time-consuming and laborious. In addition, under the traditional device communication mode, remote monitoring and management are difficult. The utility model integrates the M-BUS and RS485 communication methods, realizes the adaptability of the collector to different communication protocols, enables it to seamlessly connect metering devices such as water meters and electricity meters, has a high integration rate and convenient collection; introduces the 4G communication technology, makes the remote monitoring and management of water meter and electricity meter data more convenient, and realizes remote real-time monitoring and management; at the same time, supports multiple communication methods, ensures the adaptability of the collector to different communication protocols and device types, and improves the versatility and scalability of the system; the entire data collector realizes the simultaneous collection of data of a large number of water meters and electricity meters, and has high collection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the solution of the utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a structural block diagram of a water and electricity meter data collector based on M-BUS, RS485 and 4G communications provided by an embodiment of the utility model;

[0021] Figure 2 It is a general power supply circuit diagram of a water and electricity meter data collector based on M-BUS, RS485 and 4G communications provided by an embodiment of the utility model;

[0022] Figure 3 It is a 4G communication power supply sub-circuit diagram of a water and electricity meter data collector based on M-BUS, RS485 and 4G communications provided by an embodiment of the utility model;

[0023] Figure 4 It is an M-BUS communication power supply sub-circuit diagram of a water and electricity meter data collector based on M-BUS, RS485 and 4G communications provided by an embodiment of the utility model;

[0024] Figure 5 It is an RS485 communication power supply sub-circuit diagram of a water and electricity meter data collector based on M-BUS, RS485 and 4G communications provided by an embodiment of the utility model;

[0025] Figure 6 The MCU control circuit diagram of a water and electricity meter data collector based on M-BUS, RS485 and 4G communication provided by an embodiment of the present utility model;

[0026] Figure 7 The 4G communication circuit diagram of a water and electricity meter data collector based on M-BUS, RS485 and 4G communication provided by an embodiment of the present utility model;

[0027] Figure 8 The M-BUS communication circuit diagram of a water and electricity meter data collector based on M-BUS, RS485 and 4G communication provided by an embodiment of the present utility model. Specific embodiments

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the present utility model; the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. For example, the terms such as "length", "width", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or position based on the orientation or position shown in the drawings, and are only for convenience of description and cannot be understood as a limitation to the technical solution of the present application.

[0029] The terms "including" and "having" and any variations thereof in the specification and claims of the present utility model and the above-mentioned drawings are intended to cover non-exclusive inclusion; the terms "first", "second", etc. in the specification and claims of the present utility model or the above-mentioned drawings are used to distinguish different objects and are not used to describe a specific order. In the specification and claims of the present utility model and the above-mentioned drawings, when an element is referred to as being "fixed to" or "mounted on" or "disposed on" or "connected to" another element, it can be directly or indirectly located on the other element. For example, when an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.

[0030] In addition, referring to "embodiment" herein means that a specific feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present utility model. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0031] The utility model provides a water and electricity meter data collector based on M-BUS, RS485 and 4G communications, which is applied to the data collection process of water meters and electricity meters. It can automatically search for meters through M-BUS and RS485, and report the daily freeze data of electricity meters, support master station reading and remote switching control, etc. The uplink channel of the data collector uses 4G, and the downlink communication uses M-BUS or RS485, with flexible uplink and downlink communication methods, providing convenience for the communication connection between the water and electricity meters and the master station. Combined with Figures 1 to 8 In this embodiment, the water and electricity meter data collector based on M-BUS, RS485 and 4G communications includes: a control circuit board and a power supply circuit board that are communicatively connected; the control circuit board is provided with an MCU control circuit, a 4G communication circuit, an RS485 communication circuit, an M-BUS communication circuit, and an EEPROM / FLASH circuit. The 4G communication circuit, the RS485 communication circuit, the M-BUS communication circuit, and the EEPROM / FLASH circuit are respectively communicatively connected to the MCU control circuit; a 4G communication power supply sub-circuit is further provided on the control circuit board, and the 4G communication circuit and the 4G communication power supply sub-circuit are respectively communicatively connected. An M-BUS communication power supply sub-circuit is also provided on the control circuit board, and the M-BUS communication circuit and the M-BUS communication power supply sub-circuit are respectively communicatively connected. An RS485 communication power supply sub-circuit is also provided on the control circuit board, and the RS485 communication circuit and the RS485 communication power supply sub-circuit are respectively communicatively connected. It is powered by 220V AC, communicates with the electricity meter through two RS485 lines, and communicates with the water meter through two M-BUS lines, supporting the simultaneous access of up to 32 electricity meters and 32 water meters. A main power circuit is provided on the power supply circuit board, and the power supply is communicatively connected to the MCU control circuit.

[0032] Furthermore, in this embodiment, combined with Figures 1 to 2 The main power circuit adopts a switching power supply AC-to-DC scheme, with an input of 170 - 260V. Through steps such as rectification, filtering, power factor correction, transformer, switching power supply topology, and feedback control, the input alternating current is converted into stable direct current to meet the requirements of electronic devices. The main power circuit has advantages such as high efficiency, small volume, light weight, and stable output voltage, and can stably output 36V / 400mA and 12V / 500mA, which can meet the power consumption requirements of the data collector in this embodiment. The 36V output is used for the M-BUS communication circuit. The M-BUS can be connected to up to 32 water meters, and the static current of each water meter on the M-BUS is about 3mA. In the case of connecting 32 water meters, the static current is about 100mA, and the transient working current of a single electricity meter is 300mA.

[0033] Furthermore, in this embodiment, combined with Figure 1 、 Figures 3 to 5, the power supply sub-circuit for 4G communication uses a buck-type DC-DC conversion circuit to convert 12V DC into the required 4V DC; the power supply sub-circuit for M-BUS communication also uses a buck-type DC-DC conversion circuit to convert 36V DC into the required 24V DC; for safety considerations, the power supply sub-circuit for RS485 communication uses an isolated power supply solution to isolate the two sides of the power supply through an isolation transformer.

[0034] Furthermore, in this embodiment, the RS485 communication circuit needs to consider the requirements of communication baud rate and transmission distance. The mainstream baud rates are 2400bps and 9600bps. The three-optical-coupler with acceleration circuit solution is adopted, which has the advantages of high anti-interference, electrical isolation protection, long-distance transmission, and strong compatibility.

[0035] Furthermore, in this embodiment, combined with Figure 1 and Figure 6 , the MCU control circuit uses a mainstream control chip in the market, specifically a low-power, high-performance, high-integration, and high-reliability SOC chip, which can meet the functional and performance requirements of the data collector in this embodiment. It is the logical processing unit of the entire data collector, and its main functions are interactive control, data communication, etc.

[0036] Furthermore, in this embodiment, combined with Figure 1 and Figure 7 , while providing high-speed, low-latency, and large-capacity data transmission capabilities, the 4G communication circuit provides strong wireless communication support for the data collector. At the same time, in the design, it is also compatible with both surface-mounted SIM cards and plug-in SIM cards to meet different needs.

[0037] Furthermore, in this embodiment, combined with Figure 1 and Figure 8 , in the M-BUS communication circuit, the M-BUS bus is a master-slave half-duplex transmission bus, and it communicates in the way of calling / responding. That is, only after the master station (Master) in the central position sends an inquiry, the slave station (Slave) will transmit data to the master station. Specifically, the MBUS_TX data transmission is realized by controlling the conduction of the MOS transistor V7 to output 36V or 24V, so as to send "1" or "0". When receiving on the M-BUS bus, the current on the bus will increase by 11 - 20mA, which is converted into a small voltage signal through the sampling resistor R63, and then the data transmission is realized through the amplifier circuit. The overload detection is realized by comparing the voltage on the sampling resistor R63. When the voltage on R63 exceeds 3.3V, that is, when the M-BUS bus current exceeds 550mA, the overload is triggered.

[0038] The water and electricity meter data collector based on M-BUS, RS485 and 4G communication described in the above embodiments, compared with the prior art, there is a problem of inconsistent communication protocols when collecting and maintaining data of a large number of water meters and electricity meter devices at the same time, resulting in an increase in the communication complexity between the platform and the lower-level devices. In addition, the water meter communication uses the M-BUS method, while the electricity meter communication uses the RS485 communication method, and it is difficult to implement the processing of multiple communication methods on the same collector. The traditional collection method often requires manual on-site meter reading, which is time-consuming and laborious. In addition, under the traditional device communication mode, there are certain difficulties in remote monitoring and management. The utility model integrates the M-BUS and RS485 communication methods, realizes the adaptability of the collector to different communication protocols, enables it to seamlessly connect metering devices such as water meters and electricity meters, has a high integration rate and convenient collection; introduces the 4G communication technology, makes it more convenient to remotely monitor and manage the data of water meters and electricity meters, and realizes remote real-time monitoring and management; at the same time supports multiple communication methods, ensures the adaptability of the collector to different communication protocols and device types, and improves the versatility and scalability of the system; the entire data collector realizes the simultaneous collection of data of a large number of water meters and electricity meters, and has a high collection efficiency.

[0039] Obviously, the embodiments described above are only the preferred embodiments of the present invention, rather than all the embodiments. The preferred embodiments of the present invention are given in the drawings, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing specific embodiments, or perform equivalent replacements on some of the technical features. Any equivalent structure made by using the specification and drawings of the present invention and directly or indirectly applied to other related technical fields shall be within the scope of the patent protection of the present invention by the same token.

Claims

1. A water and electricity meter data collector based on M-BUS, RS485 and 4G communication, characterized in that, Including: A control circuit board and a power supply circuit board that are communicatively connected; An MCU control circuit, a 4G communication circuit, an RS485 communication circuit, and an M-BUS communication circuit are provided on the control circuit board, and the 4G communication circuit, the RS485 communication circuit, and the M-BUS communication circuit are respectively communicatively connected to the MCU control circuit; A main power supply circuit is provided on the power supply circuit board, and the power supply is communicatively connected to the MCU control circuit.

2. The water and electricity meter data collector based on M-BUS, RS485 and 4G communication according to claim 1, characterized in that, It further includes an EEPROM / FLASH circuit, and the EEPROM / FLASH circuit is communicatively connected to the MCU control circuit.

3. The water and electricity meter data collector based on M-BUS, RS485 and 4G communication according to claim 1, characterized in that, A 4G communication power supply sub-circuit is further provided on the control circuit board, and the 4G communication circuit and the 4G communication power supply sub-circuit are respectively communicatively connected.

4. The water and electricity meter data collector based on M-BUS, RS485 and 4G communication according to claim 1, characterized in that, An M-BUS communication power supply sub-circuit is further provided on the control circuit board, and the M-BUS communication circuit and the M-BUS communication power supply sub-circuit are respectively communicatively connected.

5. The water and electricity meter data collector based on M-BUS, RS485 and 4G communication according to claim 1, characterized in that, An RS485 communication power supply sub-circuit is further provided on the control circuit board, and the RS485 communication circuit and the RS485 communication power supply sub-circuit are respectively communicatively connected.

6. The water and electricity meter data collector based on M-BUS, RS485 and 4G communication according to claim 1, characterized in that, The RS485 communication circuit is used to communicate with electricity meters and supports connecting to 32 electricity meters simultaneously.

7. The water and electricity meter data collector based on M-BUS, RS485 and 4G communication according to claim 1, characterized in that, The M-BUS communication circuit is used to communicate with water meters and supports connecting to 32 water meters simultaneously.

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