CN107748288A - Radio energy table based on radio communication - Google Patents

Abstract

The invention discloses a wireless energy meter based on wireless communication, which includes a power supply module, a liquid crystal display module, an electric energy measurement chip, a microprocessor, a memory, an RF module, and an optocoupler module; the power supply module, the electric energy measurement chip, and the liquid crystal display module Connect with the microprocessor; connect the electric energy metering chip with the microprocessor; connect the liquid crystal display module with the microprocessor; connect the memory with the microprocessor; connect the RF module with the microprocessor; connect the optocoupler module with the microprocessor and the electric energy meter chip connection. The beneficial effects obtained by the present invention are: (1) the processing precision of the electric energy metering chip and the microprocessor is high, and it can maintain a high test precision in a large temperature range; (2) it can perform wireless meter reading, and can Real-time monitoring and processing of wireless data; (3) It can distinguish the user's power consumption state, power-on state and alarm state; (4) Provides a backup battery to ensure that the energy meter can work under power-off conditions.

Description

Wireless Energy Meter Based on Wireless Communication

technical field

The invention relates to the technical field of electric energy meter transmission, in particular to a wireless energy meter based on wireless communication.

Background technique

With the development of my country's economy, residential and industrial electricity consumption is rising rapidly. In the traditional way of electric energy meter reading, meter readers regularly go to the site to read the electricity consumption data. Often due to human factors, the meter reading is not timely, and the data is estimated and changed at will, and there is a large error with the settlement amount. It is difficult to understand the electricity consumption situation. carry out effective supervision. In addition, this high-cost, low-efficiency meter reading method has been seriously out of touch with the needs of social development. Based on the above reasons, the way of meter reading in my country's power system has begun to transition from manual meter reading to automatic meter reading using network technology.

There are two main types of automatic meter reading technologies that have been adopted at present. The first type is to use the IC card to purchase electricity in advance, and insert the recharge card into the special IC energy meter to use the electricity, but the IC card is easily damaged, and it is difficult to monitor the energy meter in real time. The second type is to use the existing wired network meter reading of the electric power department, such as using the power carrier line to collect electric energy data, which saves the investment cost in the early stage and realizes the real-time and accuracy of meter reading. However, in the long run, the construction cost of wired networks is still high, and it is difficult for this technology to integrate data with household or industrial water and gas meters.

Contents of the invention

In view of the above-mentioned defects of the prior art, the purpose of the present invention is to provide a wireless energy meter based on wireless communication, which can perform wireless meter reading, realize real-time monitoring and processing of data of each energy meter node, and complete data storage and fault warning .

The object of the present invention is achieved through such a technical solution, a wireless energy meter based on wireless communication, which includes: a power supply module, a liquid crystal display module, an electric energy metering chip, and a microprocessor;

The power supply module is connected with the electric energy metering chip, the liquid crystal display module and the microprocessor for providing power supply;

The electric energy metering chip is connected to the microprocessor, and the power value measured by the electric energy metering chip is transmitted to the microprocessor for processing;

The liquid crystal display module is connected with the microprocessor, receives and displays the data transmitted by the microprocessor.

Further, the electric energy meter also includes an optocoupler module, one end of the optocoupler module is connected to the electric energy metering chip, and the other end is connected to the microprocessor; the optocoupler module is used for Isolated protection.

Further, the electric energy meter also includes a memory connected to the microprocessor, and the memory is used for storing the power value of the electric energy meter.

Further, the electric energy meter also includes an RF module connected with the microprocessor, and the RF module is used for transmitting radio frequency signals.

Further, the liquid crystal display module includes a pulse indicator light, which is used to indicate the instantaneous power consumption of the user. If the power load is greater, the indicator light will flash faster; when the user does not use electricity, the indicator light will not bright.

Further, the liquid crystal display module also includes a trip indicator light, which is used to indicate that the electric energy meter is in a state of being switched off and not powered on.

Further, the liquid crystal display module also includes an alarm indicator light, which is used to indicate that the electric energy meter is in an alarm state or a fault state; the information code of the alarm item in the alarm state is displayed through the liquid crystal display in the liquid crystal display module.

Further, the microprocessor is CC2430.

Further, the electric energy metering chip is ADE7755.

Further, the power module includes a linear voltage regulator chip LT1763-3 and a linear voltage regulator chip LT1763-5, and the maximum output current of the linear voltage regulator chip LT1763-3 and the linear voltage regulator chip LT1763-5 is 500mA;

The power module provides a positive 3V power supply to the microprocessor through the linear voltage regulator chip LT1763-3;

The power supply module provides positive 5V power supply to the liquid crystal display module and the electric energy metering chip through the linear voltage regulator chip LT1763-5.

Owing to adopting above-mentioned technical scheme, the present invention has following advantage:

(1) The processing accuracy of the electric energy metering chip and the microprocessor is high, and it can maintain a high test accuracy in a large temperature range;

(2) It can perform wireless meter reading, and can perform real-time monitoring and processing of wireless data;

(3) It can distinguish the user's power consumption state, power-on state and alarm state;

(4) A backup battery is provided to ensure that the electric energy meter works under the condition of power failure.

Other advantages, objects and features of the present invention will be set forth in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the investigation and research below, or can be obtained from It is taught in the practice of the present invention. The objects and other advantages of the invention will be realized and attained by the following description and claims.

Description of drawings

The accompanying drawings of the present invention are as follows:

Fig. 1 is the circuit connection diagram of the present invention.

Fig. 2 is the basic structural diagram of the wireless meter reading system of the urban residential area of the present invention.

Detailed ways

The present invention will be further described below in conjunction with drawings and embodiments.

Embodiment: as shown in Fig. 1 and Fig. 2; A kind of wireless energy meter based on wireless communication, it includes: power supply module, liquid crystal display module, electric energy metering chip, microprocessor; Described microprocessor is CC2430, so The energy metering chip mentioned above is ADE7755.

The power supply module is connected with the electric energy metering chip, the liquid crystal display module and the microprocessor for providing power supply;

The electric energy metering chip is connected to the microprocessor, and the power value measured by the electric energy metering chip is transmitted to the microprocessor for processing;

The liquid crystal display module is connected with the microprocessor, receives and displays the data transmitted by the microprocessor.

The electric energy meter also includes an optocoupler module, one end of the optocoupler module is connected to the electric energy metering chip, and the other end is connected to the microprocessor; the optocoupler module is used for isolation protection during electrical signal transmission .

The electric energy meter also includes a memory connected to the microprocessor, and the memory is used for storing the power value of the electric energy meter.

The electric energy meter also includes an RF module connected with the microprocessor, and the RF module is used for transmitting radio frequency signals.

The liquid crystal display module includes a pulse indicator light, which is used to indicate the user's instantaneous power consumption. If the power load is greater, the indicator light will flash faster; when the user does not use electricity, the indicator light will not light up. .

The liquid crystal display module also includes a tripping indicator light, which is used to indicate that the electric energy meter is in the state of being switched off.

The liquid crystal display module also includes an alarm indicator light, which is used to indicate that the electric energy meter is in an alarm state or a fault state; the information code of the alarm item in the alarm state is displayed through the liquid crystal display in the liquid crystal display module.

The power module includes a linear voltage regulator chip LT1763-3 and a linear voltage regulator chip LT1763-5, and the maximum output current of the linear voltage regulator chip LT1763-3 and the linear voltage regulator chip LT1763-5 is 500mA;

The power module provides a positive 3V power supply to the microprocessor through the linear voltage regulator chip LT1763-3;

The power supply module provides positive 5V power supply to the liquid crystal display module and the electric energy metering chip through the linear voltage regulator chip LT1763-5.

When the electric energy metering chip ADE7755 measures the active power value, the CF terminal of the electric energy metering chip will output a corresponding high-frequency pulse, which is input to the microprocessor module for counting through the photoelectric isolation element in the optocoupler module, and the microprocessor module is based on the conversion The relationship is converted into power consumption information.

For the power management module, when the grid has power, the power is provided by the switching power supply, and at the same time, 4 dry batteries are reserved to ensure that the power meter can still work normally in the case of power failure.

The coordinator node in the network and the management server perform command and data transmission through serial communication, and the coordinator node is responsible for receiving and managing the data sent by all electric energy meters. Considering the problem of transmission distance, all smart energy meters are set as terminal equipment, and only communicate with the nearest routing node. The routing node only has the function of data forwarding, and can directly communicate with the coordinator node, or use other routing nodes and coordination node communication.

The server is the manager of the entire wireless sensor network. It can monitor the readings of each electric energy meter in real time, store the data in real time or in compressed form, and provide strong technical support for the implementation of ladder electricity prices; in addition, the server can also transmit key data to the power grid through the Internet. The management department provides big data support for the power sector to adjust the power balance, thereby improving the power efficiency of the grid.

The beneficial effect that the present invention has:

(1) The processing precision of the electric energy metering chip ADE7755 and the CC2430 processor is high, and can maintain high test precision in a large temperature range;

(2) It can perform wireless meter reading, and can perform real-time monitoring and processing of wireless data;

(3) It can distinguish the user's power consumption state, power-on state and alarm state;

(4) A backup battery is provided to ensure that the electric energy meter works under the condition of power failure.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements, without departing from the spirit and scope of the technical solution, should be included in the scope of the claims of the present invention.

Claims (10)

1. The wireless energy meter based on wireless communication is characterized in that it includes: a power supply module, a liquid crystal display module, an electric energy metering chip, and a microprocessor; The power supply module is connected with the electric energy metering chip, the liquid crystal display module and the microprocessor for providing power supply; The electric energy metering chip is connected to the microprocessor, and the power value measured by the electric energy metering chip is transmitted to the microprocessor for processing; The liquid crystal display module is connected with the microprocessor, receives and displays the data transmitted by the microprocessor. 2. The wireless energy meter based on wireless communication according to claim 1, characterized in that, the electric energy meter also includes an optocoupler module, one end of the optocoupler module is connected to the electric energy metering chip, and the other end is connected to the electric energy metering chip. The microprocessor is connected; the optocoupler module is used for isolation protection in the process of electrical signal transmission. 3. The wireless energy meter based on wireless communication according to claim 1, characterized in that, the energy meter further comprises a memory connected to the microprocessor, and the memory is used to store the power value of the energy meter. 4. The wireless energy meter based on wireless communication according to claim 1, characterized in that, the energy meter also includes an RF module connected to the microprocessor, and the RF module is used for transmitting radio frequency signals . 5. The wireless energy meter based on wireless communication according to claim 1, wherein the liquid crystal display module includes a pulse indicator light, and the pulse indicator light is used to indicate the user's instantaneous power consumption. The larger the value, the faster the flashing frequency of the indicator light; when the user does not use electricity, the indicator light does not light up. 6 . The wireless energy meter based on wireless communication according to claim 1 , wherein the liquid crystal display module further includes a trip indicator light, which is used to indicate that the energy meter is in a state of being switched off. 7. The wireless energy meter based on wireless communication as claimed in claim 1, wherein the liquid crystal display module also includes an alarm indicator light, which is used to indicate that the energy meter is in an alarm state or a failure state; The information code of the alarm item is displayed through the liquid crystal display in the liquid crystal display module. 8. The wireless energy meter based on wireless communication according to claim 1, wherein the microprocessor is CC2430. 9. The wireless energy meter based on wireless communication according to claim 1, characterized in that, the electric energy metering chip is ADE7755. 10. The wireless energy meter based on wireless communication according to claim 1, wherein the power module includes a linear voltage regulator chip LT1763-3, a linear voltage regulator chip LT1763-5, and the linear voltage regulator chip The maximum output current of LT1763-3 and linear regulator chip LT1763-5 is 500mA; The power module provides a positive 3V power supply to the microprocessor through the linear voltage regulator chip LT1763-3; The power supply module provides positive 5V power supply to the liquid crystal display module and the electric energy metering chip through the linear voltage regulator chip LT1763-5.