Intelligent electric meter with reusable indicating lamp

Abstract

The utility model discloses an intelligent electric meter with reusable indicating lamps. The intelligent electric meter comprises a communication interface, a liquid crystal display screen, a plurality of LED indicating lamps, a keyboard, an indicating lamp control circuit and a cable jack. The communication interface is configured to perform data interaction with external equipment; the liquid crystal display screen is configured to display information related to electricity utilization; the keyboard is configured to input a query code, and the query code is used for obtaining information related to electricity utilization; the cable jack is used for inserting a live wire, a ground wire or a zero wire; the indicating lamp control circuit comprises an LED driving circuit and a microprocessor, and the LED driving circuit is connected with the LED indicating lamps and is configured to realize multiplexing of the plurality of LED indicating lamps under the control of a control signal of the microprocessor. The utility model provides the intelligent electric meter with the reusable indicating lamps, and the indicating lamps of the electric meter are richer and more comprehensive in function through color or flickering combination of the plurality of indicating lamps.

Description

Technical Field

[0001] The utility model relates to the field of smart electric meters, in particular to a smart electric meter with reusable indicator lights. Background Art

[0002] Indicator lights are widely used in electricity meters to indicate the real-time status of the meter. Users can obtain meter status information based on the status of the indicator lights.

[0003] For example, Chinese Patent Publication 1 (CN105842502A) discloses a smart meter with a cover-opening alarm function and a method for preventing illegal cover-opening. The function involves activating an alarm indicator light if the meter cover is opened, and issuing a trip command if the damage detection module detects damage to the alarm indicator light. This effectively deters illegal cover-opening and facilitates the investigation of illegally opened meters by utilizing the alarm indicator light's warning and power-off measures. Chinese Patent Publication 2 (CN107271767A) discloses a smart meter and query method based on MQTT communication and Wi-Fi networking. The method uses the lightweight MQTT protocol to exchange meter data, resulting in low server overhead and high performance. Electricity consumption information is then sent to an integrated management platform via the MQTT protocol. However, the indicator light in Patent Publication 1 only has two functions: "pulse indication" and "alarm indication." The indicator light in Patent Publication 2 only has three functions: "operation indication," "Wi-Fi indication," and "server indication." The indicator light functions described in these patent publications are very limited and fail to cover all operating conditions of the meter. Utility Model Content

[0004] In response to the defects in the prior art, the present invention proposes a smart meter with reusable indicator lights. This device can enrich the meter's indication functions without the need for additional indicator lights.

[0005] The utility model adopts the following technical solutions:

[0006] A smart electric meter with reusable indicator lights, comprising a communication interface, a liquid crystal display, multiple LED indicator lights, a keyboard, an indicator light control circuit, and a cable jack;

[0007] The communication interface is configured to perform data exchange with an external device;

[0008] The LCD display is configured to display information related to electricity usage;

[0009] The keyboard is configured to input a query code, wherein the query code is used to obtain information related to electricity usage;

[0010] The cable jack is used to insert a live wire, a ground wire or a neutral wire;

[0011] The indicator light control circuit includes an LED driving circuit and a microprocessor. The LED driving circuit is connected to the LED indicator lights and is configured to realize multiplexing of multiple LED indicator lights under the control of the control signal of the microprocessor.

[0012] Preferably, the communication interface includes a wired interface and a wireless interface, the wired interface is an RS485 or RS232 interface; the wireless interface is a Bluetooth, GPRS or infrared photoelectric interface.

[0013] Preferably, the electricity usage-related information includes:

[0014] One or more of account balance, remaining power, meter power-on time, current date, last month's power consumption, this month's power consumption, exception code, and network status.

[0015] Preferably, the keyboard includes numeric keys, a clear key, a reset key and a confirm key.

[0016] Preferably, the query code is a factory-set fixed setting of the electricity meter or user-defined, and different electricity-related information corresponds to different query codes.

[0017] Preferably, the cable jack includes two live wire jacks, one ground wire jack and two neutral wire jacks.

[0018] Preferably, the LED indicator light can display red, yellow or green.

[0019] Preferably, the indicator light control circuit further includes a protection capacitor.

[0020] Preferably, the LED driving circuit further includes a current limiting resistor.

[0021] The beneficial effects of the utility model are:

[0022] (1) The utility model provides a smart electric meter with reusable indicator lights, which makes the indicator lights of the electric meter more versatile and comprehensive by combining the colors or flashing of multiple indicator lights;

[0023] (2) The utility model adds a later expansion function, which only requires the development of corresponding functional programs and configuration parameters. Manufacturers can easily and quickly add new indicator light functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a schematic diagram of the structure of the smart meter of the utility model;

[0026] Figure 2 The utility model relates to a control circuit for an LED indicator light in a smart electric meter. DETAILED DESCRIPTION

[0027] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features within these embodiments may be combined with one another, unless they conflict.

[0028] Smart meters are essential data collection devices for smart grids (especially smart distribution networks). They collect, measure, and transmit raw energy data, and serve as the foundation for information integration, analysis, optimization, and presentation. In addition to the basic electricity consumption metering capabilities of traditional meters, smart meters also offer intelligent features to adapt to smart grids and renewable energy applications, such as bidirectional multi-rate metering, user-side control, two-way data communication with multiple data transmission modes, and power theft prevention.

[0029] In order to indicate the working status of the electric meter, an indicator light is often provided on the surface of the electric meter. However, in the prior art, each indicator light works independently, resulting in incomplete information displayed by the indicator light.

[0030] In view of the above problems, the present invention provides a smart meter with reusable indicator lights, the structural diagram of which is shown in FIG. Figure 1 The specific plan is as follows:

[0031] A smart electric meter with reusable indicator lights, comprising a communication interface, a liquid crystal display, multiple LED indicator lights, a keyboard, an indicator light control circuit, and a cable jack;

[0032] The communication interface is configured to perform data exchange with an external device;

[0033] The LCD display is configured to display information related to electricity usage;

[0034] The keyboard is configured to input a query code, wherein the query code is used to obtain information related to electricity usage;

[0035] The cable jack is used to insert a live wire, a ground wire or a neutral wire;

[0036] The indicator light control circuit includes an LED driving circuit and a microprocessor. The LED driving circuit is connected to the LED indicator lights and is configured to realize multiplexing of multiple LED indicator lights under the control of the control signal of the microprocessor.

[0037] Through this communication interface, smart meters can exchange data with external devices, allowing operators to access meter data through these devices. In a specific embodiment of the present invention, the communication interface includes a wired interface and a wireless interface. The wired interface is an RS485 or RS232 interface, while the wireless interface is a Bluetooth, GPRS, or infrared photoelectric interface. Wired interfaces offer better transmission quality, while wireless interfaces can adapt to different operating environments. Those skilled in the art can configure the appropriate communication interface on the smart meter based on actual needs.

[0038] In addition, an LCD display is provided in the embodiment of the present invention to display electricity usage information, so that users and maintenance personnel can promptly understand the operating status of the smart meter through the information displayed on the LCD display. In a specific embodiment of the present invention, the electricity usage information includes one or more of: account balance, remaining power, meter power-on time, current date, last month's power usage, current month's power usage, abnormality code, and network status.

[0039] Preferably, the keyboard includes numeric keys, a clear key, a reset key and a confirm key.

[0040] For example, a user can enter the number 801 on the keyboard and press the confirm key to query the user's account balance and display it on the LCD screen; the clear key is used to clear the entered numbers; the reset key is used to reset the meter to restore the meter to its factory settings.

[0041] Preferably, the query code is a factory-set fixed setting of the electricity meter or user-defined, and different electricity-related information corresponds to different query codes.

[0042] The query code can be preset by the manufacturer of the smart meter when the meter leaves the factory and attached to the instruction manual of the meter for the user to check and use, or it can be set by the user according to his or her own usage habits.

[0043] Preferably, the cable jack includes two live wire jacks, one ground wire jack and two neutral wire jacks.

[0044] Preferably, it includes:

[0045] The LED indicator light can display red, yellow or green.

[0046] Preferably, the indicating the working status of the smart meter by multiplexing a plurality of LED indicator lights includes:

[0047] The working status of the smart meter is indicated by different color combinations or flashing times of multiple LED indicator lights.

[0048] In a specific embodiment of the present invention, three meter indicator lights (LED1 / LED2 / LED3) are used to implement eight indication functions, and each meter indicator can be configured to indicate different meter states through parameter configuration. It should be noted that this embodiment serves only as an example and does not limit the scope of protection of the present invention.

[0049] In this embodiment, the indicator lights can display events such as "active pulse indication", "reactive pulse indication", "second pulse indication", "communication indication", "alarm indication", "power-on indication", "relay switch-off indication", "insufficient balance indication" and "pending function".

[0050] The statuses that the indicator light can present include "indicator light status", mainly "blink once and then off", "blink three times and then off", "steady on" and "waiting to increase status", where the "×" sign indicates "steady off status".

[0051] In this embodiment, if LED1 is set to the "active pulse indication" function, when the meter generates an "active pulse", the LED1 state will change to "flashing once and then off"; when other events occur in the meter, LED1 will remain "steady off". If LED1 is set to other multiplexing functions, when the corresponding conditions occur, LED1 will become the above indicator light to display the event.

[0052] Similarly, different multiplexing functions of other indicator lights (LED2 and LED3) can be configured respectively to indicate different information of the electric meter.

[0053] Furthermore, the aforementioned "pending functions," "pending conditions," and "pending states" are intended to facilitate future expansion of new functions, requiring additional development. The operating states of the smart meter include one or more of: power-on, alarm, communication, insufficient balance, relay trip, active pulse, reactive pulse, and active pulse.

[0054] In an embodiment of the present invention, the operating status of the smart meter may further include one or more of: power on, alarm, communication, insufficient balance, relay trip, active pulse, reactive pulse, and active pulse. The operating status of the meter is indicated by the color or flashing combination of the LED indicators. For example, three yellow LED indicators indicate insufficient balance; a red LED may indicate a meter malfunction; a flashing green LED indicates the meter is communicating with the network.

[0055] Furthermore, the embodiment of this specification also provides a control circuit for an LED indicator light, specifically Figure 2 As shown, R6 / R63 / R64 are current limiting resistors used to adjust the emission intensity; LED1 / LED2 / LED3 are indicator light devices used for light indication; VCC on the left is the power supply for the LED; the right side of the LED is connected to different IO ports of the main chip MCU and is controlled by it; at the same time, in order to further protect the circuit components, a protection capacitor is also set in the indicator light control circuit.

[0056] The utility model provides a smart meter with reusable indicator lights. The combination of multiple indicator lights in color or flashing makes the meter indicator light function richer and more comprehensive. At the same time, the utility model adds a later expansion function. It only needs to develop the corresponding function program and configuration parameters. Manufacturers can quickly and easily add new indicator light functions.

[0057] The embodiments described above are merely descriptions of preferred implementation methods of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the scope of protection of the present invention.

Claims

1. A smart meter with reusable indicator lights, characterized in that: The smart meter includes a communication interface, a liquid crystal display, multiple LED indicators, a keyboard, an indicator light control circuit, and a cable jack; The communication interface is configured to perform data exchange with an external device; The LCD display is configured to display information related to electricity usage; The keyboard is configured to input a query code, wherein the query code is used to obtain information related to electricity usage; The cable jack is used to insert a live wire, a ground wire or a neutral wire; The indicator light control circuit includes an LED driving circuit and a microprocessor. The LED driving circuit is connected to the LED indicator lights and is configured to realize multiplexing of multiple LED indicator lights under the control of the control signal of the microprocessor.

2. The smart meter according to claim 1, wherein: The communication interface includes a wired interface and a wireless interface. The wired interface is an RS485 or RS232 interface; the wireless interface is a Bluetooth, GPRS or infrared photoelectric interface.

3. The smart meter according to claim 1, wherein: The electricity usage-related information includes: One or more of account balance, remaining power, meter power-on time, current date, last month's power consumption, this month's power consumption, exception code, and network status.

4. The smart meter according to claim 1, wherein: The keyboard includes numeric keys, a clear key, a reset key and a confirm key.

5. The smart meter according to claim 1, wherein: The query code is a factory-set fixed setting of the meter or user-defined, and different electricity-related information corresponds to different query codes.

6. The smart electric meter according to claim 1, characterized in that: The cable jack includes two live wire jacks, one ground wire jack and two neutral wire jacks.

7. The smart electric meter according to claim 1, characterized in that: The LED indicator light can display red, yellow or green.

8. The smart electric meter according to claim 1, wherein: The indicator light control circuit also includes a protection capacitor.

9. The smart electric meter according to claim 1, characterized in that: The LED driving circuit further includes a current limiting resistor.

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