A meter reading device based on WIFI and BLE and a meter communication system

Abstract

The utility model relates to a kind of electric meter reading device and electric meter communication system based on WIFI and BLE, and electric meter reading device is used to connect with P1 electric meter to transmit the data of P1 electric meter to target gateway equipment by Bluetooth or LORA wireless;Electric meter reading device includes power supply module, data processing module and signal transmission module;Power supply module includes isolation converter and direct current converter;Data processing module includes integrated chip, and integrated chip is integrated with BLE chip and WIFI chip;Signal transmission module includes communication line and RJ12 interface.The utility model satisfies P1 electric meter data acquisition and the technology of platform server display data, by BLE fast network configuration technology, local WIFI configuration network parameter can be realized, help to reduce the maintenance cost of version, with double power supply hardware automatic switching circuit design, when P1 electric meter cannot power supply, it has the coping scheme of external adaptation automatic switching.

Description

Technical Field

[0001] This utility model relates to the field of Internet of Things (IoT) technology, and in particular to a meter reader and meter communication system based on WIFI and BLE. Background Technology

[0002] Currently, existing P1 meter readers read data from P1 meters via RJ12 interfaces and then transmit it to the home gateway for data processing via wired transmission. However, this solution has the following drawbacks: limited communication distance, requiring additional wiring and increasing construction difficulty; lack of data confidentiality, making the bus susceptible to eavesdropping and posing a risk; poor data real-time performance and stability; the meter reader cannot meet the needs of long-distance data transmission; and the insufficient power supply capacity of the P1 meter necessitates an external power source. Summary of the Invention

[0003] To address at least one of the aforementioned technical problems, this utility model proposes a meter reader and meter communication system based on WIFI and BLE.

[0004] According to some embodiments of this utility model, a meter reader based on WIFI and BLE is provided. The meter reader is used to connect to a P1 meter to wirelessly transmit the data of the P1 meter to a target gateway device via Bluetooth or LoRa. The meter reader includes a power supply module, a data processing module, and a signal transmission module. The power supply module includes an isolation converter and a DC-DC converter. The DC-DC converter has two input terminals and one output terminal. The output terminal of the DC-DC converter is connected to the data processing module. One input terminal of the DC-DC converter is connected to the P1 meter, and the other input terminal is connected to the output terminal of the isolation converter. The input terminal of the isolation converter is connected to... The DC-DC converter is connected to an external power source and is used to convert the electrical signal of the isolation converter or the P1 meter to power the data processing module. The data processing module includes an integrated chip, which integrates a BLE chip and a WIFI chip. The integrated chip is connected to the signal transmission module and is used to acquire data from the P1 meter through the signal transmission module and transmit it wirelessly via Bluetooth or WIFI. The signal transmission module includes a communication line and an RJ12 interface. The first end of the communication line is connected to the integrated chip, and the second end of the communication line is connected to the RJ12 interface. The RJ12 interface is used to connect to the P1 meter to acquire data from the P1 meter.

[0005] In some possible implementations, the power supply module further includes a switching power adapter and a TYPEC transmission line. The switching power adapter is used to connect to an external power source to convert the external power source into DC power. A first end of the TYPEC transmission line is connected to the switching power adapter, and a second end of the TYPEC transmission line is connected to the input end of the isolation converter. One or both ends of the TYPEC transmission line are provided with TYPEC interfaces.

[0006] In some possible implementations, the switching circuit includes a transistor, a fuse, and a current-limiting resistor. The power supply module also includes a switching circuit, which includes a transistor, a fuse, and a current-limiting resistor. The emitter of the transistor is connected to a first terminal of the fuse, the second terminal of the fuse is connected to the positive power supply pin of the RJ12 interface, the base of the transistor is connected to a first terminal of the current-limiting resistor, the second terminal of the current-limiting resistor is connected to the power ground pin of the RJ12 interface, the base of the transistor is also connected to the output terminal of the isolation converter, a Schottky diode is provided between the base and collector of the transistor, and a Schottky diode is also connected to the emitter of the transistor.

[0007] In some possible implementations, the meter reader further includes a button reset circuit; the button reset circuit includes a three-pronged push-button switch, the first pin of which is connected to the BLE chip and the DC-DC converter respectively, the second pin and the third pin of which are both grounded, and the first pin of which is also connected to a Schottky diode.

[0008] In some possible implementations, the meter reader further includes a debugging module, which includes at least one serial communication interface for connecting external debugging equipment to debug the meter reader.

[0009] In some possible implementations, the meter reader further includes a prompting module, which includes at least one LED light connected to the BLE chip. The at least one LED light is used to light up and turn off in response to a control signal from the BLE chip to indicate communication status information.

[0010] According to some embodiments of this utility model, an electricity meter communication system is also provided, including a gateway device, a P1 electricity meter, and a meter reader based on WIFI and BLE as described in any of the above embodiments. The gateway device is a Bluetooth gateway or a wireless router gateway. The meter reader is electrically connected to the P1 electricity meter to obtain the data of the P1 electricity meter. The meter reader is wirelessly connected to the gateway device to send the data of the P1 electricity meter to the gateway device. The gateway device is used to upload the data of the P1 electricity meter to a target terminal device.

[0011] This utility model has the following beneficial effects: (1) The meter reader of this utility model can process the data collected by the P1 meter locally and upload it to the platform server through 2.4GHz WIFI wireless technology, thus satisfying the technical requirements of P1 meter data collection and platform server data display.

[0012] (2) The meter reader of this utility model can configure the network parameters of the local WIFI through BLE fast network configuration technology, which helps to reduce the maintenance cost of the version.

[0013] (3) The meter reader of this utility model has a dual power supply hardware automatic switching circuit design, and has a solution to automatically switch by external adapter when the P1 meter cannot be powered.

[0014] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the present invention.

[0015] Other features and aspects of the present invention will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions and advantages in the embodiments or prior art of this specification, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This diagram shows a first structural block diagram of a meter reader based on WIFI and BLE according to an embodiment of the present invention. Figure 2 A second structural block diagram of a meter reader based on WIFI and BLE according to an embodiment of the present invention is shown. Figure 3 A circuit diagram of an isolation converter according to an embodiment of the present invention is shown; Figure 4 A circuit structure diagram of a TYPEC interface according to an embodiment of the present invention is shown; Figure 5 A circuit diagram of a DC-DC converter according to an embodiment of the present invention is shown; Figure 6 A circuit diagram of a switching circuit according to an embodiment of the present invention is shown; Figure 7 A circuit structure diagram of an integrated chip according to an embodiment of the present invention is shown; Figure 8 A circuit diagram of a button reset circuit according to an embodiment of the present invention is shown. Figure 9 The circuit structure diagram of the serial communication interface of the debugging module according to an embodiment of the present invention is shown. Figure 10 A circuit diagram of the prompting module according to an embodiment of the present invention is shown; Figure 11 A circuit diagram of an RJ12 interface according to an embodiment of the present invention is shown. Detailed Implementation

[0018] The technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0019] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or server that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0020] Various exemplary embodiments, features, and aspects of the present invention will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0021] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0022] In this document, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Furthermore, the term "at least one" in this document means any combination of at least two of any one or more elements. For example, including at least one of A, B, and C can mean including any one or more elements selected from the set consisting of A, B, and C.

[0023] Furthermore, to better illustrate this utility model, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this utility model can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this utility model.

[0024] Currently, existing P1 meter readers read data from P1 meters via RJ12 interfaces and then transmit it to the home gateway for data processing via wired transmission. However, this solution has the following drawbacks: limited communication distance, requiring additional wiring and increasing construction difficulty; lack of data confidentiality, making the bus susceptible to eavesdropping and posing a risk; poor data real-time performance and stability; the meter reader cannot meet the needs of long-distance data transmission; and the insufficient power supply capacity of the P1 meter necessitates an external power source.

[0025] To address the aforementioned technical problems, this utility model provides a meter reader based on WIFI and BLE. The meter reader connects to a P1 meter to wirelessly transmit the P1 meter's data to a target gateway device via Bluetooth or LoRa. The target gateway device can be a home gateway device, such as a home router, or other gateway devices. The target gateway device is used to send the P1 meter's data to a server or terminal service platform.

[0026] Please refer to Figure 1 and Figure 2 The meter reader includes a power supply module, a data processing module, and a signal transmission module.

[0027] In this embodiment, the power supply module includes an isolation converter and a DC-DC converter, wherein, Figure 2 The DC / DC converter in the text is a direct current converter. Figure 2The Power-5V / 2W module is used to connect to a DC power supply. The Power-5V / 2W is an isolation converter. The DC converter has two inputs and one output. The output is connected to the data processing module, one input is connected to the P1 meter, and the other input is connected to the output of the isolation converter. The input of the isolation converter is connected to an external power supply. The isolation converter filters and isolates the external 5V power supply to output a DC 5V signal. The DC converter converts the electrical signal from the isolation converter or the P1 meter to power the data processing module. In one specific implementation, the circuit structure of the Power-5V / 2W module is as follows: Figure 3 As shown.

[0028] In some possible implementations, the power supply module also includes a switching power adapter and a TYPEC transmission line. The switching power adapter is used to connect to an external power source to convert the external power source into DC power. The first end of the TYPEC transmission line is connected to the switching power adapter, and the second end of the TYPEC transmission line is connected to the input end of the isolation converter. One or both ends of the TYPEC transmission line are provided with TYPEC interfaces. Figure 2 The Type-C module mentioned above refers to the switching power adapter and the Type-C transmission line. In some specific implementations, the circuit structure of the Type-C interface is as follows: Figure 4 As shown.

[0029] This embodiment does not limit the specific selection of the DC-DC converter or the circuit structure. For some specific embodiments, please refer to... Figure 5 The circuit structure of the DC-DC converter is as follows: Figure 5 As shown, the DC-DC converter is model JW5017 or JW5026. These models can convert an input voltage of 4.5V to 28V into a target voltage. In the actual circuit, the input voltage of the DC-DC converter is 5V, and the output voltage is 3.3V.

[0030] In some embodiments, the power supply module further includes a switching circuit; please refer to [reference needed]. Figure 6 The switching circuit includes a transistor, a fuse, and a current-limiting resistor. The emitter of the transistor is connected to the first end of the fuse, the second end of the fuse is connected to the positive power supply pin of the RJ12 interface, the base of the transistor is connected to the first end of the current-limiting resistor, the second end of the current-limiting resistor is connected to the power ground pin of the RJ12 interface, the base of the transistor is also connected to the output of the isolation converter, a Schottky diode is provided between the base and collector of the transistor, and a Schottky diode is also connected to the emitter of the transistor.

[0031] In this embodiment, the data processing module includes an integrated chip, which integrates a BLE chip and a WIFI chip. The integrated chip is connected to the signal transmission module and is used to acquire data from the P1 meter through the signal transmission module and transmit it wirelessly via Bluetooth or WIFI.

[0032] This embodiment does not limit the specific model of the integrated chip. In some implementations, the integrated chip may be, for example, Figure 2 The LPT270 chip shown is illustrated in the following diagram. Figure 7 As shown.

[0033] In this embodiment, the signal transmission module includes a communication line and an RJ12 interface. Please refer to [reference needed]. Figure 2 , Figure 2 In this context, P1 meter refers to the data from the P1 electricity meter. The COM communication line connected to the P1 meter is the aforementioned communication line. The first end of the communication line is connected to the integrated chip, and the second end is connected to an RJ12 interface. The RJ12 interface is used to connect to the P1 electricity meter to obtain its data. In some specific implementations, the circuit structure of the RJ12 interface is as follows... Figure 11 As shown.

[0034] In some possible implementations, the meter reader also includes a reset module, which includes a button reset circuit for manual reset. The button reset circuit ensures the operational stability of the meter reader.

[0035] Please refer to Figure 8 The button reset circuit includes a three-pin button switch. The first pin of the three-pin button switch is connected to the integrated chip and the DC-DC converter respectively. The second and third pins of the three-pin button switch are both grounded. The first pin of the three-pin button switch is also connected to a Schottky diode.

[0036] In some embodiments, the meter reader further includes a debugging module, which includes at least one serial communication interface. The serial communication interface is used to connect an external debugging device to debug the meter reader. That is, the serial communication interface is a DWUART communication interface, which is used to implement debugging and testing of the chip.

[0037] For some specific implementation methods, please refer to Figure 9 , Figure 9 Connectors J10 and J11 are the aforementioned serial communication interfaces. External debugging devices connect to the integrated chip through J10 and J11, and complete the parameter settings of the integrated chip based on J10 and J11.

[0038] In some embodiments, the meter reader further includes a prompting module, which includes at least one LED light connected to a BLE chip. The at least one LED light is used to light up and turn off in response to a control signal from the BLE chip to indicate communication status information.

[0039] For some specific implementation methods, please refer to Figure 10 The indicator module includes two LEDs, which are used to display the communication status of the P1 meter and the WIFI communication connection status, respectively. It should be understood that the information displayed by the LEDs depends on which pin of the integrated chip the LED is connected to. In other cases, the LEDs can also be used to display the load status or power status of the integrated chip.

[0040] This utility model embodiment also provides an electricity meter communication system, including a gateway device, a P1 electricity meter, and an electricity meter reader based on WIFI and BLE according to any of the above embodiments. The gateway device is a Bluetooth gateway or a wireless router gateway. The electricity meter reader is electrically connected to the P1 electricity meter to obtain the data of the P1 electricity meter. The electricity meter reader is wirelessly connected to the gateway device to send the data of the P1 electricity meter to the gateway device. The gateway device is used to upload the data of the P1 electricity meter to the target terminal device.

[0041] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical applications, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A meter reader based on WIFI and BLE, characterized in that, The meter reader is used to connect to the P1 meter to wirelessly transmit the data of the P1 meter to the target gateway device via Bluetooth or WIFI; the meter reader includes a power supply module, a data processing module, and a signal transmission module. The power supply module includes an isolation converter and a DC converter. The DC converter has two input terminals and one output terminal. The output terminal of the DC converter is connected to the data processing module. One input terminal of the DC converter is connected to the P1 meter, and the other input terminal of the DC converter is connected to the output terminal of the isolation converter. The input terminal of the isolation converter is connected to an external power source. The DC converter is used to convert the electrical signals of the isolation converter or the P1 meter to power the data processing module. The data processing module includes an integrated chip, which integrates a BLE chip and a WIFI chip. The integrated chip is connected to the signal transmission module and is used to acquire data from the P1 meter through the signal transmission module and transmit it wirelessly via Bluetooth or WIFI. The signal transmission module includes a communication line and an RJ12 interface. The first end of the communication line is connected to the integrated chip, and the second end of the communication line is connected to the RJ12 interface. The RJ12 interface is used to connect to the P1 meter to obtain data from the P1 meter.

2. A meter reader based on WIFI and BLE according to claim 1, characterized in that, The power supply module also includes a switching power adapter and a TYPEC transmission line. The switching power adapter is used to connect to an external power source to convert the external power source into DC power. The first end of the TYPEC transmission line is connected to the switching power adapter, and the second end of the TYPEC transmission line is connected to the input end of the isolation converter. One or both ends of the TYPEC transmission line are provided with TYPEC interfaces.

3. A meter reader based on WIFI and BLE according to claim 2, characterized in that, The power supply module also includes a switching circuit, which comprises a transistor, a fuse, and a current-limiting resistor. The emitter of the transistor is connected to the first terminal of the fuse, the second terminal of the fuse is connected to the positive power supply pin of the RJ12 interface, the base of the transistor is connected to the first terminal of the current-limiting resistor, the second terminal of the current-limiting resistor is connected to the power ground pin of the RJ12 interface, and the base of the transistor is also connected to the output terminal of the isolation converter. A Schottky diode is provided between the base and the collector of the transistor, and a Schottky diode is also connected to the emitter of the transistor.

4. A meter reader based on WIFI and BLE according to claim 1, characterized in that, The meter reader also includes a button reset circuit; The button reset circuit includes a three-pin button switch. The first pin of the three-pin button switch is connected to the BLE chip and the DC-DC converter, respectively. The second pin and the third pin of the three-pin button switch are both grounded. The first pin of the three-pin button switch is also connected to a Schottky diode.

5. A meter reader based on WIFI and BLE according to claim 1, characterized in that, The meter reader also includes a debugging module, which includes at least one serial communication interface for connecting external debugging equipment to debug the meter reader.

6. A meter reader based on WIFI and BLE according to claim 1, characterized in that, The meter reader also includes a prompting module, which includes at least one LED light connected to the BLE chip. The at least one LED light is used to light up and turn off in response to the control signal of the BLE chip to indicate communication status information.

7. A communication system for electricity meters, characterized in that, The device includes a gateway device, a P1 electricity meter, and a meter reader based on WIFI and BLE according to any one of claims 1-6. The gateway device is a Bluetooth gateway or a wireless router gateway. The meter reader is electrically connected to the P1 electricity meter to obtain data from the P1 electricity meter. The meter reader is wirelessly connected to the gateway device to send the data from the P1 electricity meter to the gateway device. The gateway device is used to upload the data from the P1 electricity meter to a target terminal device.

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